otherwise the counter goes into negative ;)

also  reset all negative counters

Fixes #5116

closes #6677

closes #6146
closes #6136

Adds welcome message on registration Welcome message is only send out if podmin account is defined and welcome message is enabled in the config.

This also enables the podmin account to send messages
to any local user.

closes #6128

closes #6041

Thanks to Josias for the hint

Fetch user params instead of require.

* Throw away old system
* Add new system
* Add new example files
* Replace all calls
* add the most important docs
* Add Specs
* rename disable_ssl_requirement to require_ssl
* cloudfiles isn't used/called in our code
* since community_spotlight.list is only used as enable flag replace it with such one and remove all legacy and irelevant codepaths around it
* die if session secret is unset and on heroku
* First basic infrastructure for version information

This reverts commit 946f78b0.

RegistrationsController#create re-renders the form instead of redirecting, so user doesn't lose what they've entered.
Took out RegistrationsController#update, since all it was doing was calling super.
Took out stubbing of user save, because I actually want to check that save is doing the right thing.

Rename instantiate! to build, no more raising in build, no saving in build, no seeding of aspects in build.