Add preferences page:
Groovy
  ->Libraries to include in groovy projects (ant.jar)??
  ->Option: refresh workspace after compile completion
  ->Editor
     ->Templates [DONE]
     
Add to project context menu:
Groovy -> Add/Remove groovy support (toggle mode)

Compiler:
- Fix groovyc compile problems; look at how ant task does it instead.
  Maybe use the RootLoader instead.
- Why is compilation so slow? Check this stuff.

Editor:
- support indentation for methods/loops/if-elses etc.

Content outline:
- support also static fields