Update Twitter Bootstrap to the latest version to incorporate its bug fixes etc.
Check the changelog and ensure no additional changes need to be made for compatibility.
Bootstrap has been updated as part of #120 so this can now be closed. I did a side-by-side comparison of the popup and options page and noticed no differences.
Turns out I tested it against the wrong branch(doh!) and there are definitely some changes required to be compatible.
Fixes/patches have been delivered in #125 after a bit of a mess.