Remove travis
Refactored maven project provider
IDE -1842 Can't create service builder file for project
IDE-1700 Add the action buttons for opening the home folder.
IDE-1703 added custom editor configuration for liferay xml files
- new editor configuration can pop up windows with quick fixes
- added quick fix and quick assist for changing xml validation level
- simplified plugin.xml
  - use one extension point for all editor configurations
  - removed default xml searchers for static
- adapted xml tests to new edit configuration
- note: this configuration isn't avaiable for jsp editors