Added how-to doc for using optional gems
Bug 1017783: Fixing broken html tag and removing the duel tipsy on
content headers in content search that results in two tooltips.
Merge pull request #3163 from ehelms/bug-1017783

Bug 1017783: Fixing broken html tag and removing the duel tipsy on
Merge pull request #3152 from daviddavis/temp/20131009160518

Added how-to doc for using optional gems
Adapting to new errata applicability