added images and icons
backgrounds added
added more backgrounds
Merge branch 'joey'

Conflicts:

CarbonFlights/src/main/java/edu/davis/carbonflights/activity/MainActivit
y.java

CarbonFlights/src/main/java/edu/davis/carbonflights/transport/bus/BusDet
ailAdapter.java
	CarbonFlights/src/main/java/edu/davis/carbonflights/utility/Utils.java