Fully Xtext 2.4 compliant, reworked ITF+IDT MWE2s, added ITF refactor
Rolled back IDT conf (not ready for Xtext 2.4)
ITF refactoring now ok: fixed plugin.xml (merge with plugin.xml_gen)
Fixed licence and descriptors for all the Xtext-based editors.
Now properly externalizing strings for vendor and plugins names.
Remove useless dependency to GMF Tooling Runtime
Force Xtext 2.4.3+ since upgrade
Merge branch 'master' into new-project-wizard