User sees a dashboard for each council member

- New view for councilmember based loosely on app dashboard
- Add a link to the councilmember's page from the legislative file page
Add district maps to the councilmember dashboard pages

- Transform the fixture data for districts to 4326
- Prefetch tenures in the councilmember view
- Display tenure status and map for all tenures for a councilmember on their dashboard
- Zoom map to district bounds
Fix bug in legfile_detail template

- Still using old-style url tag
Remove debug code in the councilmember page Javascript
Populate the subscription RSS feed link with the feed filter parameters
Add sharing and subscription icons (courtesy of @katielewis)
Allow subscribing to councilmember sponsored legislation from memeber detail page

- Update the style of the subscription widgets
- Derive the CouncilMemberDetail view from the SubscriptionMixin
- Kick off all tooltips
Add sponsors to the search feed labels
Designate council presidentship on member detail page
Add date of beginning tenure to councilmember admin list
Update the initial data in the phillyleg fixtures about councilmembers and districts
Add a global footer
Make the footer a little shorter
Use forked pysolr because of bug
Specify pysolr version
Make SearchResultsFeed.get_content work with the search index fields
Mark subscription email context variables as 'safe'
Make the footer always at the bottom
Start adding maintenance and administration notes, starting with how to load council districts and invalidate locations
Merge cfa/master into opencity/master

Conflicts:
	councilmatic/static/main/css/screen.css
	  - Keep the old styles -- these are going to change completely anyway.
	councilmatic/templates/base.html
	  - Add in the page footer, but leave the compress tag commented out for now.
	councilmatic/templates/phillyleg/legfile_detail.html
	  - Check for sponsors before rendering the sponsors header.
	  - Put the comment block back. Consider turning off through configuration.