Enabled mainline count download by count year.
xlrd handles xlsx!  Also, "Bicycle" == "Bike"!
Enable vehicle-type based filtering for movement counts also.
Implement 4 download types: movement|mainline, all counts|filtered (for the marked locations)
Update to refer to Django 1.5, and for the current year
Some admin interface updates: show streetnames on the node page,
show counts on the mainline count location page.
FILTER USING A RADIUS+ADDRESS IMPLEMENTATION!
Also, move everything into a MapsLib class since global variables make me
uncomfortable (and not obvious).
Added a Count Dracula logo