Merge pull request #150 from emorency/master

OPAL-1689, OPAL-1761
OPAL-1721 - return en 503 error from server and made sure TableView gets refreshed upon index service state changes
OPAL-1721 - completed the bug fix with the removal of index tool bar flashing when the service was not running
Merge pull request #151 from kazoompa/bug-OPAL-1721

Bug opal 1721
OPAL-1756 - fixed
Merge pull request #152 from kazoompa/bug-OPAL-1721

OPAL-1756 - fixed
OPAL-1762: Passing the derived variable link as a parameter
Commenting out unnecessary code