delete OU (WIP)
refactor and delete unnecessary code
added support for custom cgi names
fixed delete OU
add object selector
add new users and groups (WIP)
delete old CGIs and models
rename ManageUsers to Manage
delete unneeded references to no longer existing models
some fixes in add user and group (still WIP)
hide kerberos OU
Merge branch 'cperello/multiou' into jacalvo/multiou

Conflicts:
	main/users/schemas/users.yaml
	main/users/src/EBox/Users.pm
	main/users/src/EBox/Users/Model/OUs.pm
Merge branch 'cperello/multiou' into jacalvo/multiou
remove use of non-existent package
Merge branch 'cperello/multiou' into jacalvo/multiou
modified addGroup template and CGI to use JS to jhave normal dialog behavior
use ClientPopupBase instead of overriding
added new JS method Zentyal.Dialog.submitForm
fixed errors showing in modalboxes without redirect
more fixes for the redirect in dialogs (WIP)