Fix for stockers
Speeded stocker && Merge remote-tracking branch 'origin/master'

Conflicts:
	src/supermarket/StaffTypes/Stocker.java
Merge branch 'master' of https://github.com/jelmerhulsman/Supermarket

Conflicts:
	src/supermarket/StaffTypes/Stocker.java
	src/supermarket/StaffTypes/Unloader.java