diff --git a/package-lock.json b/package-lock.json
index ec4a2bc..409112b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,6 @@
       "version": "0.1.0",
       "license": "LGPL-3.0",
       "dependencies": {
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         "backbone": "^1.4.0",
         "coffeeify": "^3.0.1",
         "coffeescript": "^2.3.2",
@@ -27,7 +26,6 @@
         "express-session": "^1.16.1",
         "file-saver": "^2.0.0",
         "font-awesome": "^4.7.0",
-        "global-cache": "^1.2.1",
         "jquery": "^3.4.0",
         "jquery-resizable-dom": "^0.32.0",
         "jstree": "^3.3.8",
@@ -54,7 +52,9 @@
         "w3-css": "^4.1.0"
       },
       "devDependencies": {
+        "connect-timeout": "^1.9.0",
         "findit": "^2.0.0",
+        "line-reader-sync": "^0.1.0",
         "node-fetch": "^2.6.7",
         "qunitjs": "^2.4.1",
         "uuid": "^8.3.2"
@@ -296,8 +296,9 @@
       }
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     "node_modules/async": {
-      "version": "2.6.3",
-      "license": "MIT",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "dependencies": {
         "lodash": "^4.17.14"
       }
@@ -306,11 +307,6 @@
       "version": "1.0.3",
       "license": "MIT"
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-    "node_modules/async-lock": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/async-lock/-/async-lock-1.3.1.tgz",
-      "integrity": "sha512-zK7xap9UnttfbE23JmcrNIyueAn6jWshihJqA33U/hEnKprF/lVGBDsBv/bqLm2YMMl1DnpHhUY044eA0t1TUw=="
-    },
     "node_modules/asynckit": {
       "version": "0.4.0",
       "license": "MIT"
@@ -430,6 +426,15 @@
         "tweetnacl": "^0.14.3"
       }
     },
+    "node_modules/bigbuffer": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/bigbuffer/-/bigbuffer-0.0.5.tgz",
+      "integrity": "sha1-U14VjsXsUip66eMSZuCjyFb4CFQ=",
+      "dev": true,
+      "dependencies": {
+        "should": "*"
+      }
+    },
     "node_modules/binary-extensions": {
       "version": "2.2.0",
       "license": "MIT",
@@ -893,6 +898,20 @@
         "node": ">=0.10.0"
       }
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+    "node_modules/coffee-script": {
+      "version": "1.12.7",
+      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.12.7.tgz",
+      "integrity": "sha512-fLeEhqwymYat/MpTPUjSKHVYYl0ec2mOyALEMLmzr5i1isuG+6jfI2j2d5oBO3VIzgUXgBVIcOT9uH1TFxBckw==",
+      "deprecated": "CoffeeScript on NPM has moved to \"coffeescript\" (no hyphen)",
+      "dev": true,
+      "bin": {
+        "cake": "bin/cake",
+        "coffee": "bin/coffee"
+      },
+      "engines": {
+        "node": ">=0.8.0"
+      }
+    },
     "node_modules/coffeeify": {
       "version": "3.0.1",
       "license": "MIT",
@@ -1070,6 +1089,48 @@
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       }
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+    "node_modules/connect-timeout": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/connect-timeout/-/connect-timeout-1.9.0.tgz",
+      "integrity": "sha1-vCcyaxIhA3FL6/oNlYurM/ZSLjo=",
+      "dev": true,
+      "dependencies": {
+        "http-errors": "~1.6.1",
+        "ms": "2.0.0",
+        "on-finished": "~2.3.0",
+        "on-headers": "~1.0.1"
+      },
+      "engines": {
+        "node": ">= 0.8"
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+    "node_modules/connect-timeout/node_modules/http-errors": {
+      "version": "1.6.3",
+      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
+      "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
+      "dev": true,
+      "dependencies": {
+        "depd": "~1.1.2",
+        "inherits": "2.0.3",
+        "setprototypeof": "1.1.0",
+        "statuses": ">= 1.4.0 < 2"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/connect-timeout/node_modules/inherits": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+      "dev": true
+    },
+    "node_modules/connect-timeout/node_modules/setprototypeof": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
+      "integrity": "sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ==",
+      "dev": true
+    },
     "node_modules/console-browserify": {
       "version": "1.2.0"
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@@ -2476,18 +2537,6 @@
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       "license": "BSD"
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-      "resolved": "https://registry.npmjs.org/global-cache/-/global-cache-1.2.1.tgz",
-      "integrity": "sha512-EOeUaup5DgWKlCMhA9YFqNRIlZwoxt731jCh47WBV9fQqHgXhr3Fa55hfgIUqilIcPsfdNKN7LHjrNY+Km40KA==",
-      "dependencies": {
-        "define-properties": "^1.1.2",
-        "is-symbol": "^1.0.1"
-      },
-      "engines": {
-        "node": ">= 0.4"
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       "version": "0.2.3",
       "dev": true,
@@ -3406,6 +3455,16 @@
         "node": ">=6"
       }
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+    "node_modules/line-reader-sync": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/line-reader-sync/-/line-reader-sync-0.1.0.tgz",
+      "integrity": "sha1-aW4GlarHhkfnQ0AZhQe2SM7z9TI=",
+      "dev": true,
+      "dependencies": {
+        "bigbuffer": "*",
+        "coffee-script": "*"
+      }
+    },
     "node_modules/load-json-file": {
       "version": "4.0.0",
       "license": "MIT",
@@ -5992,6 +6051,60 @@
       "version": "1.7.2",
       "license": "MIT"
     },
+    "node_modules/should": {
+      "version": "13.2.3",
+      "resolved": "https://registry.npmjs.org/should/-/should-13.2.3.tgz",
+      "integrity": "sha512-ggLesLtu2xp+ZxI+ysJTmNjh2U0TsC+rQ/pfED9bUZZ4DKefP27D+7YJVVTvKsmjLpIi9jAa7itwDGkDDmt1GQ==",
+      "dev": true,
+      "dependencies": {
+        "should-equal": "^2.0.0",
+        "should-format": "^3.0.3",
+        "should-type": "^1.4.0",
+        "should-type-adaptors": "^1.0.1",
+        "should-util": "^1.0.0"
+      }
+    },
+    "node_modules/should-equal": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/should-equal/-/should-equal-2.0.0.tgz",
+      "integrity": "sha512-ZP36TMrK9euEuWQYBig9W55WPC7uo37qzAEmbjHz4gfyuXrEUgF8cUvQVO+w+d3OMfPvSRQJ22lSm8MQJ43LTA==",
+      "dev": true,
+      "dependencies": {
+        "should-type": "^1.4.0"
+      }
+    },
+    "node_modules/should-format": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/should-format/-/should-format-3.0.3.tgz",
+      "integrity": "sha1-m/yPdPo5IFxT04w01xcwPidxJPE=",
+      "dev": true,
+      "dependencies": {
+        "should-type": "^1.3.0",
+        "should-type-adaptors": "^1.0.1"
+      }
+    },
+    "node_modules/should-type": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/should-type/-/should-type-1.4.0.tgz",
+      "integrity": "sha1-B1bYzoRt/QmEOmlHcZ36DUz/XPM=",
+      "dev": true
+    },
+    "node_modules/should-type-adaptors": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/should-type-adaptors/-/should-type-adaptors-1.1.0.tgz",
+      "integrity": "sha512-JA4hdoLnN+kebEp2Vs8eBe9g7uy0zbRo+RMcU0EsNy+R+k049Ki+N5tT5Jagst2g7EAja+euFuoXFCa8vIklfA==",
+      "dev": true,
+      "dependencies": {
+        "should-type": "^1.3.0",
+        "should-util": "^1.0.0"
+      }
+    },
+    "node_modules/should-util": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/should-util/-/should-util-1.0.1.tgz",
+      "integrity": "sha512-oXF8tfxx5cDk8r2kYqlkUJzZpDBqVY/II2WhvU0n9Y3XYvAYRmeaf1PvvIvTgPnv4KJ+ES5M0PyDq5Jp+Ygy2g==",
+      "dev": true
+    },
     "node_modules/side-channel": {
       "version": "1.0.4",
       "license": "MIT",
@@ -7321,7 +7434,9 @@
       "version": "1.0.0"
     },
     "async": {
-      "version": "2.6.3",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "requires": {
         "lodash": "^4.17.14"
       }
@@ -7329,11 +7444,6 @@
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-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/async-lock/-/async-lock-1.3.1.tgz",
-      "integrity": "sha512-zK7xap9UnttfbE23JmcrNIyueAn6jWshihJqA33U/hEnKprF/lVGBDsBv/bqLm2YMMl1DnpHhUY044eA0t1TUw=="
-    },
     "asynckit": {
       "version": "0.4.0"
     },
@@ -7404,6 +7514,15 @@
         "tweetnacl": "^0.14.3"
       }
     },
+    "bigbuffer": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/bigbuffer/-/bigbuffer-0.0.5.tgz",
+      "integrity": "sha1-U14VjsXsUip66eMSZuCjyFb4CFQ=",
+      "dev": true,
+      "requires": {
+        "should": "*"
+      }
+    },
     "binary-extensions": {
       "version": "2.2.0"
     },
@@ -7745,6 +7864,12 @@
     "code-point-at": {
       "version": "1.1.0"
     },
+    "coffee-script": {
+      "version": "1.12.7",
+      "resolved": "https://registry.npmjs.org/coffee-script/-/coffee-script-1.12.7.tgz",
+      "integrity": "sha512-fLeEhqwymYat/MpTPUjSKHVYYl0ec2mOyALEMLmzr5i1isuG+6jfI2j2d5oBO3VIzgUXgBVIcOT9uH1TFxBckw==",
+      "dev": true
+    },
     "coffeeify": {
       "version": "3.0.1",
       "requires": {
@@ -7872,6 +7997,44 @@
         }
       }
     },
+    "connect-timeout": {
+      "version": "1.9.0",
+      "resolved": "https://registry.npmjs.org/connect-timeout/-/connect-timeout-1.9.0.tgz",
+      "integrity": "sha1-vCcyaxIhA3FL6/oNlYurM/ZSLjo=",
+      "dev": true,
+      "requires": {
+        "http-errors": "~1.6.1",
+        "ms": "2.0.0",
+        "on-finished": "~2.3.0",
+        "on-headers": "~1.0.1"
+      },
+      "dependencies": {
+        "http-errors": {
+          "version": "1.6.3",
+          "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
+          "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
+          "dev": true,
+          "requires": {
+            "depd": "~1.1.2",
+            "inherits": "2.0.3",
+            "setprototypeof": "1.1.0",
+            "statuses": ">= 1.4.0 < 2"
+          }
+        },
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
+        "setprototypeof": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
+          "integrity": "sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ==",
+          "dev": true
+        }
+      }
+    },
     "console-browserify": {
       "version": "1.2.0"
     },
@@ -8830,15 +8993,6 @@
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-      "resolved": "https://registry.npmjs.org/global-cache/-/global-cache-1.2.1.tgz",
-      "integrity": "sha512-EOeUaup5DgWKlCMhA9YFqNRIlZwoxt731jCh47WBV9fQqHgXhr3Fa55hfgIUqilIcPsfdNKN7LHjrNY+Km40KA==",
-      "requires": {
-        "define-properties": "^1.1.2",
-        "is-symbol": "^1.0.1"
-      }
-    },
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       "version": "0.2.3",
       "dev": true,
@@ -9394,6 +9548,16 @@
         "invert-kv": "^2.0.0"
       }
     },
+    "line-reader-sync": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/line-reader-sync/-/line-reader-sync-0.1.0.tgz",
+      "integrity": "sha1-aW4GlarHhkfnQ0AZhQe2SM7z9TI=",
+      "dev": true,
+      "requires": {
+        "bigbuffer": "*",
+        "coffee-script": "*"
+      }
+    },
     "load-json-file": {
       "version": "4.0.0",
       "requires": {
@@ -11126,6 +11290,60 @@
     "shell-quote": {
       "version": "1.7.2"
     },
+    "should": {
+      "version": "13.2.3",
+      "resolved": "https://registry.npmjs.org/should/-/should-13.2.3.tgz",
+      "integrity": "sha512-ggLesLtu2xp+ZxI+ysJTmNjh2U0TsC+rQ/pfED9bUZZ4DKefP27D+7YJVVTvKsmjLpIi9jAa7itwDGkDDmt1GQ==",
+      "dev": true,
+      "requires": {
+        "should-equal": "^2.0.0",
+        "should-format": "^3.0.3",
+        "should-type": "^1.4.0",
+        "should-type-adaptors": "^1.0.1",
+        "should-util": "^1.0.0"
+      }
+    },
+    "should-equal": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/should-equal/-/should-equal-2.0.0.tgz",
+      "integrity": "sha512-ZP36TMrK9euEuWQYBig9W55WPC7uo37qzAEmbjHz4gfyuXrEUgF8cUvQVO+w+d3OMfPvSRQJ22lSm8MQJ43LTA==",
+      "dev": true,
+      "requires": {
+        "should-type": "^1.4.0"
+      }
+    },
+    "should-format": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/should-format/-/should-format-3.0.3.tgz",
+      "integrity": "sha1-m/yPdPo5IFxT04w01xcwPidxJPE=",
+      "dev": true,
+      "requires": {
+        "should-type": "^1.3.0",
+        "should-type-adaptors": "^1.0.1"
+      }
+    },
+    "should-type": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/should-type/-/should-type-1.4.0.tgz",
+      "integrity": "sha1-B1bYzoRt/QmEOmlHcZ36DUz/XPM=",
+      "dev": true
+    },
+    "should-type-adaptors": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/should-type-adaptors/-/should-type-adaptors-1.1.0.tgz",
+      "integrity": "sha512-JA4hdoLnN+kebEp2Vs8eBe9g7uy0zbRo+RMcU0EsNy+R+k049Ki+N5tT5Jagst2g7EAja+euFuoXFCa8vIklfA==",
+      "dev": true,
+      "requires": {
+        "should-type": "^1.3.0",
+        "should-util": "^1.0.0"
+      }
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+    "should-util": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/should-util/-/should-util-1.0.1.tgz",
+      "integrity": "sha512-oXF8tfxx5cDk8r2kYqlkUJzZpDBqVY/II2WhvU0n9Y3XYvAYRmeaf1PvvIvTgPnv4KJ+ES5M0PyDq5Jp+Ygy2g==",
+      "dev": true
+    },
     "side-channel": {
       "version": "1.0.4",
       "requires": {