[Webapp build] Clean bower_components on 'mvn clean'

Addresses angular version bump for existing users, as raised in apache#34

Author: Alexander Bezzubov <[email protected]>

This patch had conflicts when merged, resolved by
Committer: Lee moon soo <[email protected]>

Closes apache#122 from bzz/clean-bower-on-web-build and squashes the following commits:

113554c [Alexander Bezzubov] webapp build: remove bower_component on mvn clean
05351cf [Alexander Bezzubov] Update Roadmap.md - replaced by link to Apache wiki

Roadmap.md

@@ -1,17 +1,4 @@
 
 # Zeppelin Roadmap
 
-This document explains the list of planned and work to be done in Zeppelin. It is intended to be exhaustive but some elements might still be missing.
-
-## Features
-
-* Support for multiple separate clusters (one per-notebook)
-* Apache Tajo interpreter
-* Apache Flink interpreter
-* Python interpreter
-* Package Zeppelin (RPM,DEB)
-* Apache BigTop integration
-* Notebook read-only mode
-* R interpreter
-* Pluggable notebook persistence layer with supporting directory structure
-* Printing output with stream
+Please check https://cwiki.apache.org/confluence/display/ZEPPELIN/Zeppelin+Roadmap for details

pom.xml

@@ -490,7 +490,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-clean-plugin</artifactId>
-          <version>2.4.1</version>
+          <version>2.6.1</version>
           <configuration>
             <filesets>
               <fileset>

zeppelin-web/pom.xml

@@ -69,6 +69,7 @@
           </excludes>
         </configuration>
       </plugin>
+
       <plugin>
         <groupId>com.github.eirslett</groupId>
         <artifactId>frontend-maven-plugin</artifactId>
@@ -143,6 +144,17 @@
           <skip>true</skip>
         </configuration>
       </plugin>
+
+      <plugin>
+        <artifactId>maven-clean-plugin</artifactId>
+        <configuration>
+          <filesets>
+            <fileset>
+              <directory>bower_components</directory>
+            </fileset>
+          </filesets>
+        </configuration>
+      </plugin>
     </plugins>
   </build>