Patch Set 4: No score; No score

Wim:
- Re-inserted the non javadoc comments
- Removed previously non-existing comments for empty method block
- Changed the filter text to indicate that only unselected projects will be filtered.
- Added this text to UIText and uitext.properties

Matthias:
- squashed subsequent patch-sets which unintentionally went into different changes
- rebased to current master