Sidebar now clickable
cities will now be gray if not in use
Module only updated if at least one city is selected
Merge branch 'feature/clickable-sidebar' into develop

Conflicts:
	js/app.js
Merge branch 'develop' of https://github.com/Panic-Tycoons/panic-tycoon into develop

Conflicts:
	js/app.js
v1.1.1
Merge pull request #16 from Panic-Tycoons/develop

Clickable Sidebar by Kev