modified:   popup.cpp
	modified:   popup.h
	modified:   popup.ui
Edited popup class, now has an error on Node.getColour()
Passed caller as parameter in the Popup class, to prevent accessing caller
before it was initiated.
Made popup class look more 'modern'
Merge branch 'test' of https://github.com/SEGroup10/IntelliGraph into test
Merge pull request #3 from SEGroup10/Cedric

Cedric