Fix gravatar template tag.

Stop using https.

Adjust default size.

Handle null email addresses.
Merge remote-tracking branch 'upstream/master'
Shorten homepage querysets and order by most vendors
Update README.md
Merge pull request #192 from steventlamb/topic/homepage_queries

Shorten homepage querysets and order by most vendors
Change github url on about page
Update new_vendor.html

edited text, took out "starred"
Update register_thanks.html

took out comma
Update FAQ.txt
Merge pull request #196 from jfarbowitz/master

quick text edit
Add .DS_Store to gitignore