* Refs #5863 : Add tags in configuration object : hostgroup, service, servicegroup
* Refs #5863 : Add tag column in Business Activity
* Refs #5863 : Add tag column in realtime views
* Refs #5863 : Fix bad variables
* Refs #5863 : Better dynamic add a tag
* Refs #5863 : Add hook button 'Add To'
* Refs #5863 : Add button 'Add to tag'
* Refs #5863 : Add action Add to tag on object whom can have tags
* Refs #5863 : Add action with enter key
* Refs #5863 : Better display when add a tag
* Refs #5863 : Add unittest for repository tags
Merge branch 'tags'

Conflicts:
	modules/CentreonAdministrationModule/tests/data/json/centreon.json
	modules/CentreonConfigurationModule/controllers/HostGroupController.php
	modules/CentreonConfigurationModule/controllers/ServiceController.php
	modules/CentreonRealtimeModule/controllers/HostController.php
	modules/CentreonRealtimeModule/controllers/ServiceController.php