Focus on social authentication, propose BrowserID as fallback.

Comes from http://zocial.smcllns.com/

form_id was dirty hack. Improve the message.

Use special section to support more software in the future.
Force authorisation before requesting kvm.

Also force authorisation to see software list.

Reuse cookie on client side in order to avoid need to pass thru parameters to
authorisation servers.

Support form_id in login_form from request as something "hidden", which can be
preprocessed as url and later passed to authentication backend.

Keep endpoint traditional_login_form in order to use old style login.

This reverts commit e1b80468 and 5057e18a.

Hex is longer then normal text and can faster lead to tag longer then 255
characters, which is deadly.

Data can be really complex string, which can be bad for tag.

After activating Vifib Facebook Server Extraction Plugin it is possible to use
facebook authorisation in Vifib.

Persons will be automatically created thanks to reusing REST API call, which has
already logic for Facebook user initial synchronisation.

Provides frontend access.

Show more informations (url, software type).
Show connection parameters on hosting subscription.
Hide useless informations.

Hosting Subscription has no packing list related, so show slap state.