Fixed item stock display issues.
	Double list items were created when canceling and re-opening the form
	Deleting an item messed up the list styling
	Typing <Enter> would create multiple empty lines
	Focus was not properly set after typing <Enter>
Merge branches 'develop' and 'develop' of https://github.com/OpenHMIS/openmrs-module-openhmis.inventory into feature/cash-152