Small Airtime Pro fix for ShowFormService
CC-5672: Webstream warnings on SaaS

Don't parse/use header info if get_headers returns false
Remove old jQuery library
Removed old version of jquery-ui
We don't seem to use jQuery 1.10 at the moment
Remove duplicate copy of CSS file that we don't use
Move showinfo.js to libs and link via URLs, remove old jQuery versions
Merge branch '2.5.x-jquery-cleanup' of https://github.com/danielhjames/Airtime into 2.6.x
Add some defensive code against missing memcached settings