Changes since 0.5.0

* Message API
* Payment reminder messages
* Messages to Warn after expiring trial period
* cleanup and refactoring of messages code
* require token authentication for API
* rename security related functions to be clear
* nagios test for webapp login
* nagios test for soledad sync
* prevent crash when destroying tokens (#5382)
* redirect home when logged in visits /signup (#5446)
* large refactoring of engine and directory layout
* move users engine into main
* move certs engine into main
* update documentation for new engine layout
* move remaining engines into engines directory
* rename help engine to support
* refactor nagios tests with support classes
* nagios test for registering new users
* enable nagios tests to work with older versions of requests lib
* API endpoint for requesting the current service_level
* null pattern refactoring for current_user as UnauthenticatedUser
* rename UnauthenticatedUser to AnonymousUser
* change service level configuration strategy
* bringing back empty cert prefixes
* adopt service_level config to platform settings
* add signup and login info on the forms
* cleanup homepage
* unify wording for destroying accounts
* recover from invalid tickets (#5552)
* remove cert link in development
* display notice that client signup is prefered (#5549)
* capitalize Loading... indicator (#5542)
* use simple_form for all forms
* ensure buttons are properly loading and reset
* open close toggle in ticket header
* translate signup and login buttons
* basic password validation (#5557)
* reduce client_side_validations dependency (to be removed)
* simplify download button
* remove OS specific download buttons
* adopt pricing view to current service_level format
* upgrade debugger to work with latest ruby 1.9.3 patch release
* hide srp forms when js is disabled (#5548)
* allow for usernames with dots
* fix ticket form submission and validation (#5657)
* stop email autofil for ticket forms (#5664)
* User#email returns email addresses only if service provided
* move User Control Panel heading out of masthead (#5658)
* open/close toggle and fields in different forms (#5659)
* upgrade rails to 3.2.18 for security fixes

Conflicts:
	app/assets/javascripts/srp
	test/nagios/soledad_sync.py
	test/nagios/webapp_login.py

make download button wide enough for helvetica #5039

upgrade rails to 3.2.18 for security fixes

This way the pricing link will not be shown for an empty hash. Which is easier to get into the config file than nil. And we can later verify the configuration to have a hash as the service_levels.

open/close toggle and fields in different forms - fixes #5659

Bugfix/5664 stop email autofill

move User Control Panel heading out of masthead