initial refactoring of signatures
Refactored fireEvent methods in eventTarget and CollaborativeObject
updated JavaDoc
Merge branch 'master' of github.com:mkrause/gx into BaseModelEventRefactoring

Conflicts:
	src/gx/realtime/CollaborativeObject.java
	src/gx/realtime/EventTarget.java
	src/gx/realtime/Model.java
added javadoc to the Model
Merge pull request #44 from mkrause/BaseModelEventRefactoring

BaseModelEvent refactoring