IDE-1721
IDE-1721 source formatting
IDE-1721 use getDocrootFile instead of getServiceFile
IDE-1721 remove useless createJob methods
IDE-1721 remove duplicated functionality this is in super method
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
IDE-1703 source formatting
IDE-1850 improved new LayoutTpl editor
- made the preview not fill the row when sum of weights is not 100 or 12
- fixed the column cannot be shown completely
- made it look better when there are many columns and rows
- catch the NPE caused by null content outline