ORA2 release-2014-08-07T20.03
Merge pull request #4742 from edx/will/ora2-release-2014-08-07T20.03

ORA2 release-2014-08-07T20.03
BLD-1125: Validation of content experiments after managing a group.
Added styling.
Added Jasmine tests.
REVERT THIS BEFORE MERGE.
Add message type.
Different icons depending on type of notification message (error or warning).
Modified Jasmine tests to reflect new functionality.