Special color to Style class; other minor changes from GF branch
Add core features from GF branch (without grammar editing)
Update tabs on page update
Use DummyReasoner only in Ontology class
Fix bug with tabs
Improve localization and topic editing
Merge remote-tracking branch 'origin/master' into gfservice

Conflicts:
	src/ch/uzh/ifi/attempto/acewiki/gf/GFDeclaration.java
	src/ch/uzh/ifi/attempto/acewiki/gf/GFEngine.java
	src/ch/uzh/ifi/attempto/acewiki/gf/GFGrammar.java
	src/ch/uzh/ifi/attempto/acewiki/gf/GFHandler.java
	src/ch/uzh/ifi/attempto/acewiki/gf/GfTextOperator.java
	src/ch/uzh/ifi/attempto/acewiki/gui/SentenceComponent.java