Adds missing cart/checkout breadcrumb stylesheet
Updates DataTables plugin to v1.10.3
Updates Sortable plugin to v0.5.2
Adds select2 jquery widget v3.5.1 (for DataTables yadcf support)
Updates sample action_maps for bootstraptheme & bootstrap3theme to refer to included subtheme (commented out)
Use correct/consistent icon for 'add new event registration' menu item
Updates some DataTables parameters to use new param names instead of deprecated ones
Adds column filtering to showall orders views; cleans up some other ecommerce views; fixes add new order;create ref order to add initial order status; [#1218]