Merge pull request #7 from KotieSmit/develop

Develop
options now on config screen
options now saving
Working - Ready for testing
Fixed some styling
Improved styling on A4 and receipt invoice styling
fix error in path to submit in item-kits
Item Kit id is now shown in list - Same as Barcode for the same item
Merge branch 'develop' of github.com:KotieSmit/openpos into develop
Added BOM link and screen
Removed languages, added Bill of materials - now retrieving from db, and displaying
jquery working, error/succes msg showing after bom save
Save
BOM working one level deep
BOM Calculating, and updating stock correctly
Cost now pulling from bom items
Fixed javascript on bom screen.  Calculating bom cost when adding and deleting items
Calculating bom cost on all bom items
Update README.md
Update README.md