Fix #2 Add missing locale entities for Fx 25.
Fix bad Pref window findbar appearance for Fx 25.
Change some monkey patch style, use let statement

Prevent adding unused variables to patched object.
"Findbar wrapped" event compatible with Firefox 25

Do the monkey pactch for every new FindBars, with "TabFindInitialized"
event.

See bug 537013, change FindBar as per-tab basis
https://bugzilla.mozilla.org/show_bug.cgi?id=537013
Merge branch 'findbar'
Version 1.2.9a1