Cleaned up comments, added new package, changed a few values etc.
Added edit product activity. Does nothing atm.
More work on edit product.
Updated database comments.
Renamed core package to barcode, added debug package and moved barcodeviewactivity there.
Fix to row.xml, and added TODOs.
Added edit product code.
Changed to number keyboard in price field.
Added toast to edit product.
Added toast to add new product. Added more javadocs to databasehelper.
Fixed alot of strings and layouts, fixed wording.
Refactored database activity and added onresume code.
Forgot to add super.onResume().
Fixed EditProductActivity, now the fiels are filled in automatically.