redifined rectangles as svg paths, defined all rooms
set opacity on mouseover
Moved opacity change to CSS

Moving the opacity change to CSS both makes the application easier
to modify in the future and fixes the issue where the shading would
disappear on a click event.
Merge branch 'master' into path-shading

Conflicts:
	js/housing.js
Built changes
v0.6.0
Merge branch 'path-shading'

Adds support for background shading around rooms to give clear
indication that a room is clickable.
Fixed click handler
v0.6.1