Make Hactar heading link back to home
change url/title field to have "http://" by default, only clear it on click
fix bug where celery tasks weren't updating whoosh index
Fix up scraper some more:
 * return page content as unicode
 * do after_commit in the correct place
some cleanup in hactar.scraper
add some logging in memes.py
run git pull if we're not cloning in setup
split sending to github into seperate method and do it before setup_repo