PLFENG-1805 : Fix formatting issue of XML headers with Java 7
PLFENG-1805 : Put the configuration related to plf40 in a dedicated profile plf40
Later we may have a plf41 profile. We'll probably have to allow to configure more things to remove things hardcoded in properties files bundled in the plugin
PLFENG-1805 : Allow to override languages configuration from the command line
PLFENG-1805 : Don't fail with a NPE if no repositories are defined