Art Update - Basic Towers

Created a basic tower graphic, reworked the towerlocation graphic,
changed all relevant art filenames to camelcase.
Merge remote-tracking branch 'origin/master'

Conflicts:
	nbproject/private/private.xml
	src/control/EventManager.java
Merge branch 'master' of https://github.com/jackhamilton/ProjectEmineo

Conflicts:
	nbproject/private/private.xml