Merge pull request #258 from fanf/ust_2797/dev/3736_choose_technique_version_for_new_directives

Ust 2797/dev/3736 choose technique version for new directives
Ref #3000 : API Rest Utils
Fixes #3280 : Add API Rest for Rules
Fixes #3294: API Rest for Directives
Fixes #3295 : API Rest for Groups
Fixes #3067: API Rest for Nodes
Ref #3000 : Some little corrections, licence, and reorganisation (remove rest services package)
Refs #3695: first steps: basic repos for api token, and working spring security rest authentication

Conflicts:
	rudder-web/src/main/scala/bootstrap/liftweb/AppConfig.scala
Ref #3695 : First walk with Angular
Fixes #3695 : Create API management page, only client side, with Angular
Change path, add rudder context, indent