Code Generator for Eclipse Code

Don't try to add jetemplate if jetemplate is null

Added tests for jetemplate with AST, deserialisation of Jetemplate and generation of Template

Implemented generator retrieving through the new method bundle@... but left the old way because it is still used when generationg through the wizard

Reduced the UI dependencies

Removed ui plug-in from dependency list

Import the moved class from the correct package

Import the moved class from the correct package

Adjusted the class after the moving

Move the ch.sahits.codegen.ui.util.WorkspaceFragmentProvider class back from ch.sahits.codegen.ui to ch.sahits.codegen.core

Removed the dependency on the logger