WIP: Improved Eduskunta import functionality

Now use the SGML inputs instead of parsing the HTML.
WIP: New Eduskunta code, next step
WIP: Import parliament members
WIP: Find current party for MPs
Add support for Jinja2 templates
parliament/models/member.py: Fix typos in District model
Finish MP import rewrite
Add support for parsing Eduskunta meeting minutes
Importer for agenda item discussion
social: Retry feed update a couple of times before giving up
Eduskunta: Finalize vote import
Add example code for rendering latest social updates
Link PlenarySessionItem and PlenaryVote together
Add example code to display latest plenary session items
Eduskunta: Fix sgm-to-xml.sh invocation
Eduskunta: Add support for importing one plenary vote
Add django-compressor
Add next version for new main page
Eduskunta: Fetch MP portraits
parliament: Add some fields to Member for caching