Use the information in compatibility.ini to detect that the current running
application is an older version than previously ran with the profile and in
that case open a UI allowing the user to launch the profile manager, launch
the previous instance of the application or quit.
Also includes the patch from bug 1523725.
--HG--
rename : browser/themes/shared/information.svg => toolkit/themes/shared/profile/information.svg
extra : rebase_source : f81be6c98b8248ca9a09c1e3d70cff2f925ad77f
extra : intermediate-source : 198a6d5b96d4127b6d21485a3b1b0ab2d3bc2f72
extra : source : c9d89812bc226ca593119bf440cb4f5e50ac2ace