make match-pred optional for common/save-cancel
Added some locators required for distributors
Update custom info for a distributor
Added a notification for distributor update
removed blank lines
updated the duplicate links
Revert back the changes of optional match-pred
modified distributor update function and added few tests
Merge branch 'master' into distributors

Conflicts:
	src/katello/ui_common.clj
modified tests/distributors to bz-bugs
Merge pull request #779 from kbidarkar/distributors

Distributors