Bump Rails to 3.2.19

Rails 3.2.19 fixes a possible SQL-Injection when using the PostgreSQL
adapter. However this is only exploitable when using the "bit" type,
which we don't.
Use double quotes when embeding translations in JS

Translations commonly include single quotes, which closes
the JavaScript string unexpectedly. Closes #5055
Port Getting Started page to Bootstrap
Merge pull request #5057 from blase/feature/4466-port-getting-started-page-to-bootstrap

Port Getting Started page to Bootstrap
Remove stylesheet tag from mobile sign_up template
Remove text shadow from the button
Merge pull request #5061 from blase/feature/4466-port-getting-started-page-to-bootstrap

Remove text shadow from the button
Publish salmon endpoint URL in Webfinger XRD

Specification in Panzer draft for Salmon, paragraph 3.3 mentions:
   "The 'salmon' link relation may specify a Salmon endpoint used to notify
    a resource, typically a user account, about external mentions of that
    resource. For a user account, the salmon mention link SHOULD appear in
    the Webfinger [Webfinger] XRD document for the user account."

Source:
http://salmon-protocol.googlecode.com/svn/trunk/draft-panzer-salmon-00.html#SMLR
Merge pull request #5062 from mmn/develop

Publish salmon endpoint URL in Webfinger XRD
Add changelog for mobile sign-in fix [ci skip]
flexible font-size for sign_in podname huge text
Merge pull request #5056 from arlogn/login-podname-size-flexible

Flexible font-size for huge text in sign_in page
Add visibilit icons in publisher dropdown aspect