Add New Progrmming Languages

If you would like to add a new programming language:

1. vj4/constant/language.js

2. vj4/ui/components/scratchpad/ScratchpadEditorContainer.js (for syntax highlight in IDE mode editors, available values)

3. vj4/ui/components/cmeditor/cmeditor.js (for syntax highlight in Markdown editors, available values)

4. vj4/ui/components/highlighter/hljs.js (for generic syntax highlight, available values)