use jquery-sortable for view reordering
use noUiSlider for builder sliders
remove jquery-ui as a builder dependency
move facet container rendering into container class
make container editor template a member of the class
move facet and view container setup into their classes, prepare for regular type ordering in widget editors
darag and drop for facet placement
Merge pull request #133 from zepheira/feature/drag_drop_and_slider_rewrite

Restore facet and view ordering, remove jquery-ui 

Nice. Pulled.