First go on trade filter backend
added search class
merged develop + ongoing work on shipment filters
Merge branch 'shipments' of github.com:unepwcmc/SAPI into shipments

Conflicts:
	app/controllers/trade/shipments_controller.rb
Added all trade filters
Merge branch 'shipments' of github.com:unepwcmc/SAPI into shipments
added name field to model
ember - added Permit model
typo fix
fixed appendix filter sanitisation
work on shipment filters - basic selectors
Merge branch 'shipments' of github.com:unepwcmc/SAPI into shipments
added specs for shipments filter
Merge branch 'shipments' of github.com:unepwcmc/SAPI into shipments
Fixed bugs on permits_ids and time_range
added an endpoint for prefix permit search
Merge branch 'shipments' of github.com:unepwcmc/SAPI into shipments
allow wildcard search for permits
ember - first go at passing some query params on the shipments page
Merge branch 'shipments' of github.com:unepwcmc/SAPI into shipments