Fixed error in bash completion when an '|' is used
Show 'pcs acl' and 'pcs config' in bash completion
Remove related constraints when removing remote-node
Add ability to add a resource to the group at the specific position

* Add ability to add a resource to the group at the specific position.
* Add ability to move the resource within the group to the specific
  position.
Fix adding resource to a group

* Verify there is no resource/clone/master with id group_name when
  creating a new group.
* resource_group_add function does not push the cib to the cluster
  any more.
* Unnecessary variables have been removed from resource_group_add
  function
Improved support for rules

* replaced rule parser
* added support for
  * mixed 'and' 'or' rules
  * parentheses
  * duration in date rules
  * value types
* added values validation
* capable of handling invalid rules providing explanatory error messages