Add feature for favicon upload. Fix typos.
Merge admin look-and-feel -steps to one file.
Add pending steps for favicon.
Add favicon form elements.
Favicon functionality, tests and migrations.
Favicon translations.
Add migrations for converting old favicons to paperclip.
Update structure.
Remove unecessary down from migrations.
Merge branch 'master' into favicon-without-remove-favicon-uri
Fix structure.sql
Merge pull request #390 from sharetribe/favicon-without-remove-favicon-uri

Favicon functionality without remove favicon_url.