FLUID-4973: Fixed crash log "logActivity" on IE8 and removed unused utility "applyHostFunction". Some test cases for activity describing and logging in FluidJSTests.js
FLUID-4927: Fixed the IE failure at testing UIO preview component.
FLUID-4927: Fixed the full preview UIO integration test that fails in IE.
Merge remote-tracking branch 'amb26/FLUID-4973'

* amb26/FLUID-4973:
  FLUID-4973: Fixed crash log "logActivity" on IE8 and removed unused utility "applyHostFunction". Some test cases for activity describing and logging in FluidJSTests.js
Merge branch 'master' into FLUID-4927
FLUID-4927: Converted fluid.uiOptions.inline into an auto-init component. The fat panel unit test still fails in this commit.
FLUID-4927: Get rid of nested expander as well as replacing the manual manipulation of the staticEnvironment with the new progressiveEnhancement API.