[misc] fix features name after moving the files to the *-ui subproject
[misc] update version number to snapshot
[maven-release-plugin] prepare release application-mocca-calendar-2.2.1
[maven-release-plugin] prepare for next development iteration
Merge branch 'stable-2.2.x'

Conflicts:
	application-mocca-calendar-ui/pom.xml
	pom.xml
(the version numbers ...)