WEBLAB-146 : Create of parent for every services that manage dependencies (and configuration) commons to components, webservices and portlets
WEBLAB-144: Done for components and webservices.
WEBLAB-143: Done but need to be tested in deployed versions...
WEBLAB-128: Done
WEBLAB-92: Done

Plus a lot of minor refactorings when the upgrade was necessary due to:
 - change in dependencies (commons lang 2.4 --> commons lang 3.0)
 - remove some deprecated weblab uses
 - bad header (no header or old one).