Initial import.
Initial import.
* add entitytype crud APIs
* add entity crud APIs
License info
* alignment to new APIs
* fix on REST encoded parameter
* integration of smartcampus.client.commons
* alignment to new APIs
* fix on REST encoded parameter
* integration of smartcampus.client.commons
* used entity type id instead of entity type name
* maxResults passed as request parameters instead of pathvariable
* client alignment
* fix on client json generation in POST request
* added complete CRUD for  Group, Community, Topic
* simplified JSON production
* fix NullPointerException converting object to JSON
added .gitignore
Merge branch 'first_version'