PIMS-3035: Browse Inventory | Should allow user to deselect category
PIMS-2648: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-1' at line 1
minor UI tweaks to the inventory browser and shipment listing pages
PIMS-3033: Record Inventory | UI tweaks for Blake
minor CSS change to lessen the gutter between left and main content