Fix missing navbar gradients.
Merge pull request #93 from Supremicus/feature/FixNavbarGradients
Update qTip2 to v2.2.1.
Remove deprecated and redundant qTip2 attributes and CSS.

Fix restore scene exceptions tip over title on displayShow page.
Change ajax for a deferred ajax call used for plots tips and scene exception tips.
Tweak some tip positions and cleanup calls to be more uniform.