Move to OSchemaHelper as more convinient way to change schema
Display of textarea paramters as multiline: issue #62.

Implemented the same for scripts textarea on property
Add filtering of properties according to issue #75
Some lifting for issue #66
Add command to view UML diagram. Fix for issue #78
Fix infinite loop. Related to issue #78
Fix bug with incorrect name property for child class
New visualizer "listbox" for LINKs according to issue #64
Merge branch 'master' of https://github.com/PhantomYdn/Orienteer