Added the sourceLangListBox used to show a reference (from another translation language) in the editor.
Added the referenceLabel displaying the reference and backend functionality to fetch the locales in the current project version.
Unit test for GetTargetForLocaleHandler and GetLocaleListHandler.
Replaced the old localeStrings (en, da, es etc) with the display name (English, Danish, Spanish etc) in the LocaleList.
The reference string in the editor is now updated when the user presses "Refresh current page" in the editor.
Add enable/disable the referenceList in the EditorOptionsView. The selection is saved to the database via UserOptions.java
Changed indent in all previously commited files
Added ReferenceVisibleEvent.java to handle show/hide of the reference drop-down list instead of HideReferenceEvent.java and ShowReferenceEvent.java
Also added newline to the end of some files
Some formatting changes
Changed name of visible variable from display to isVisible.
Update zanata module versions
Reformat to Seam style
Merge pull request #1 from zanata/show-reference-lang

Merge Reformat to Seam style and Update zanata module versions