[PDI-10744] - Some more updates due to UX changes. 

1) Revert disabling of connect menu-item due to updated UX flow.  UX flow to be updated.
2) Add warning user that tabs are dirty prior to connecting to repo per UX flow
3) When disconnecting from repo, don't give option for tabs to remain open if user has read & execute.  UX modified flow to reflect this.
4) Wiring up of create content permissions.