Update Ace

[gkoberger]

Seems like ace has stopped tagging releases in ajaxorg/ace-builds (last one was 8 months ago), despite lots of new updates being released.

Would it be possible to update ui-ace's dependencies to just use the latest from ace-builds?

[douglasduteil]

To prevent future version conflict I'll stick with tag versions sorry.
But you can force bower to use the master branch if you need those new updates.

bower install ace-builds#master