Fixed displaying ACLs in GUI

* Parsing ACLs - add users and groups without roles and roles without
  permissions into ACL data structure so permission-less roles will be
  displayed in GUI
* Display arrow next to selected ACL role
* Fixed role detail fade out fade in when switching roles
* Display first role when switched to ACLs page and no role is selected
* Fixed collapsing of data tables
* Fixed missing cells in data tables
Added ability to assign permissions, users & groups to a role
Added ability to add & remove ACL roles
Create user/group when assigning to ACL role if not exists