Stock Page Update:

- Changed DataGridView1 to stockView
- Changed stockView settings to remove the ability to add new rows
- Added "Add new stock item" group box section to allow (when in update mode) the user to add new stock items.
- Added Update code (now it updates whenever you make a change to any cell in the view while in update mode).
- Added Purchase mode code.
Still required:
- need to add code for print stock list (will do tomorrow)
Merger Problems partially fixed. WARINING: button 13 has dissapeared but it's code is still there, a new button needs to be added and the method that was button13 click needs to be renamed/modified appropriately.

Furthurmore, 2 or 3 labels have dissapeared from the sales form and need to be readded...
Appologies for the inconvinence, it appears Git doesn't handle two ppl naming buttons and labels the same, well.