version change to 1.7.12
switch to Xtext / Xtend 2.6.0
pom cleanup
changes by build run
add value converter for qualified IDs
Merge branch 'develop-1.7.11' into develop-1.7.12
Merge branch 'develop-1.7.12' into develop
adding missing inject statement
Merge remote-tracking branch 'origin/develop-1.7.11' into develop-1.7.12
Merge remote-tracking branch 'origin/develop-1.7.12' into develop