Merge pull request #24 from miriammariety/master

Edit Window
connected remove command to UI
Merge branch 'master' of github.com:LucidComplex/inventory-system
added factory methods, implemented add item (still lacking category and supplier)
Merge pull request #25 from miriammariety/master

Added 'EditCategoryCommand' :) <3
Merge branch 'master' of github.com:LucidComplex/inventory-system

Conflicts:
	src/commands/AddCategoryCommand.java
	src/commands/EditCategoryCommand.java
	src/commands/RemoveItemCommand.java
	src/ui/EditWindow.java
fixing project dependency
fixing project
changed edit item window
Merge upstream/master