Merge pull request #31 from miriammariety/master

Yeay disposed :)
added tentative accept request command
Merge branch 'master' of github.com:LucidComplex/inventory-system
fixed request list combo box not updating
Wafu
Merge upstream/master
Added more UI stuff. But unfinished. Because eli is wafu <3<3<3
Item, Supplier, and Category Details UI Added
Changed-ish the code in EditCategoryWindow() 
Still working on the edit category though.

Hi eli. :)