Show 'do not display in public timeline' when replying to self

Change boost sprite to look like fa-retweet

Fix S3 default settings

application website validation, don't link to app website if website isn't set,
also comment out animated boost icon from #464 until it's consistent with non-animated version

Merge branch 'feature/toot-app-source' of https://github.com/ineffyble/mastodon into ineffyble-feature/toot-app-source

Make boost button spin around

Add a 'Back to Mastodon' link to footer of settings pages

Merge branch 'feature/toot-app-source' of github.com:ineffyble/mastodon into feature/toot-app-source

Test for presence of Application in haml before trying to render details, to fix errors identified by CI

Add tracking of OAuth app that posted a status, extend OAuth apps to have optional website field, add application details to API, show application name and website on detailed status views. Resolves #11

Hide 'Do not display on public timeline' for reply toots

with YAML-defined defaults. Add admin page for editing global settings. Add "site_description"
setting that would show as a paragraph on the frontpage

fix Vagrantfile so that the correct ruby is installed