Added new files to support Red Deer task: https://github.com/jboss-reddeer/reddeer/issues/278

Added tests for new clases - Oct 2
Moved Mylyn related classes to fix the build
fixed failing build because of missing mylyn dependencies
Adds mylyn depencies for Eclipse Bugzilla. Fixes #349
REDDEER-343: Bad implementation of WidgetHandler.setFocus
Removes version restrictions of Mylyn plugins. Fixes #356
Removes obsolete BrowserTest