fix invoice_num
-add "send comment" in supermarket client
-reordering of supplier tab table is disabled
Merge branch 'master' of https://github.com/truly-auto/SENG403.git
some comments
removed invoice populating
Added value type to invoice number column
new query for supplier to get invoice table
Fixed broken gui builder in the supplier view
Merge branch 'master' of https://github.com/truly-auto/SENG403
Added Initial comments, and added comment retrieval code
Some refactoring, tests, and GUI related
Test cases, order logic corrected, exceptions thrown on illegal negative integers
test
Supplier side

manager can view, add and delete system users, Supplier can delete items
Merge remote-tracking branch 'origin/Eric-Recent'

Conflicts:
	src/main/java/FoodLink/gui/SupermarketSys.java
	src/main/java/FoodLink/gui/SupplierSys.java
resolving conflicts