[CLEAN] delete unused BonitaApplication entryPoint
[CLEAN] add object BonitaUrlClassLoader
[CLEAN] remove unused class members
[REFACTOR] move code to load forms application into a dedicated class FormsApplicationLoader
[REFACTOR] add behavior to BonitaUrlContext
[CLEAN] remove unused methods in URLUtils
[REFACTOR] add behavior to BonitaUrlContext
[REFACTOR] add behavior to BonitaUrlContext
[REFACTOR] refactor UrlUtils