Fix Bug 919702

Modify the GA Content Experiment code to be a no-op if the querystring
matches the regex /[?&]f=[0-9]+/
Merge pull request #1264 from jgmize/bug-919702

Fix Bug 919702 - Adjust GA experiment code to only execute when f=[0-9]+ is *not* in query string
Bug 914730 - Add language selector to pages using a non-standard footer
Merge pull request #1257 from kyoshino/bug-914730-lang-switcher

Bug 914730 - Add language selector to pages using a non-standard footer