FLUID-5418: Added html5 support for IE8 for "simplify" preference to work.
FLUID-5418: Updated the release notes and upgraded html5shiv library to the latest version.
Merge branch 'master' into FLUID-5418
Merge remote-tracking branch 'cindy/FLUID-5418'

* cindy/FLUID-5418:
  FLUID-5418: Updated the release notes and upgraded html5shiv library to the latest version.
  FLUID-5418: Added html5 support for IE8 for "simplify" preference to work.