Don't use internal *.jar archive anymore
https://developer.mozilla.org/en-US/docs/Extensions/Updating_extensions_for_Firefox_4#XPI_unpacking
Mark compatible with Firefox 24.0a1 and SeaMonkey 2.21a1
Add en-US template for translation
Better way to temporarily override built-in prefs:
increase delay and update restore timer on each new call
Emulate Ctrl+left-click on links, that looks like dummy, but may be real
(workaround for #1)