Bag multi select

Implemented a simple way to move items from one multi select to another.
Also fixed a bug with determining which bagnumbers are missing. If there
are no bags then the bag number returned would be 0, fixed so now it
always returns as 1 if there are no bags
Cleanup
Continued development of the bag create interface. Some visual bugs for the time being. Item Type drop down bow now updates the item store box with item serials grouped by item type.

Some old unused code and files moved for future deletion
Bag Creation and cleanup

Continued development of the bag create interface. Some visual bugs for
the time being. Item Type drop down bow now updates the item store box
with item serials grouped by item type.

Some old unused code and files moved for future deletion