Update date format on Divisions

Fixes #540 

The only tests that failed were all the compare_static things. I think this is ok?

Since you wanted the date like this 2nd Sep 2014, 6:15 PM, Senate

I changed the end comma to a hyphen like this 2nd Sep 2014, 6:15 PM - Senate

Not sure how you feel about that. Also it seems there were some other instances of the structure with the comma that I can't find in the code to change