[WIP] Admin on Bootstrap

can't we remove all these jquery plugins like powertip valign css responsive-tables etc... Basically  like just have:

//= require jquery
//= require jquery_ujs
//= require jquery-ui/datepicker
//= require jquery-ui/sortable
//= require jquery-ui/autocomplete
//= require modernizr
//= require jquery.cookie
//= require spree
//= require spree/backend/spree-select2
//= require bootstrap-sprockets
//= require_tree .

Basically remove everything and only add things back in as required.