Only disable image resizing in Firefox

Because that code crash IE
resignFirstResponder when the view is destroy
Merge pull request #20 from nicolasbadia/ie-fix

resignFirstResponder when the view is destroy & Only disable image resizing in Firefox
Fixed an incompatibility with Master
Merge branch 'master' of github.com:learndot/sproutcore-wysiwyg
cool merge bro
esolved an issue where the dom was sometimes not ready before the value change. Moved the dom update to the next run loop.
Resolved a weird resignment of first responder but not focus issue, and a weird not focusing properly issue with the editor
A bit more sophistication around focus in and out
removed logging
Removed incorrect comment, and inlined a few method calls
Not sure what's up here