Added functionality to "float" current tab ie. open in new window
Moved to advanced commands and renamed command for clearness
Should fix travis issue #792
Merge pull request #793 from deiga/fix-travis

Should fix travis issue #792
Disable repeated tab closing. Refs #555.
Merge remote-tracking branch 'deiga/float-tab' into HEAD

Conflicts:
	background_scripts/commands.coffee
	background_scripts/main.coffee
Map moveTabToNewWindow to `W`.

We should reserve easily-pressed keys for commonly-used actions.
Update the shoulda.js submodule.
Revert accidental change.