Moved from magicselect to selectize

There was a bit of hacking to get the styling for selectize to work,
 along with two lines of changes inside of selectize.js, unfortunately:

+ self.$control_input.css({opacity: 0, position: 'absolute', left: self.rtl ? 10000 : -10000});
+ self.isInputHidden = true;

selectize.js is from selectize/dist/js/standalone/selectize.js (v 0.9.0)
 I used standalone because that included the plugins (and we are using the remove_button plugin)
Merge branch 'idearel' of github.com:tmad4000/Outlinr-PHP into idearel