This release enables using custom gems in the leap platform
customization. It also fixes cornercases during the account creation and
documents debugging in production.

 * android app now supports signup, so change text that said otherwise.
 * added debugging note to DEVELOP.md
 * Account.create - do a User.new instead of User.create, so that we can
   report the errors on the object if not saved.

Pull request #172 from elijh/feature/customgem
 * Gemfile: fix problem when config is missing environments
 * support for optional gems in Gemfile (engines/ and
 * config/customization/gems/)

Pull request #171 from elijh/feature/identityfail
 * if identity fails to be created, destroy the user. also, pass through
   identity errors to user and add identity class hook.

Hotfix since 0.5.2 release candiate:
 * tickets: fix bug that allow index of other users

Pull request #167 from azul/feature/i18n-for-ticket-system:
 * fix flash for creating anonymous tickets
 * adopt tests to new translations
 * destroy_btn helper method
 * move users key into layouts scope so it does not conflict with users
   scope
 * add btn helper for link_to with .btn
 * remove icon_color variable - yagni
 * sorting translation keys some
 * navigation works with empty locale selected
 * tickets: structure i18n
 * flash_for with_errors option displays error messages
 * remove unused bold helper and instead sanitize flash
 * Controller#flash_for instead of FlashResponder
 * split up and refactor TicketController#update
 * separate tests for the ticket list from main controller test
 * splitting up long functional test case
 * move comment related tests out of TicketControllerTest
 * use i18n.missing_translations

Pull request #168 from azul/bugfix/fix-login-validations:
 * clearify identity validations
 * ensure User#reload returns self
 * hand on errors from Email to Identity to User
 * catch corner cases of account creation
 * adopt tests to new error messages for identities
 * allow changing the user_id on an identity
 * ensure identity is cleared on user.reload - fixes test
 * use Identity for testing login availability

Pull request #163 from azul/feature/3398-save-hashed-token
 * hash token with sha512 against timing attacs #3398

Pull request #165 from azul/feature/cert-fingerprints
 * change from GET to POST for certs
 * store fingerprints with timestamp
 * store cert fingerprint with main user identity
 * SmtpCertsController, routes and tests
 * fix Email so User.new.valid? does not crash
 * basic integration test for cert API
 * calculate cert fingerprints to store for leap_mx

Pull request #166 from elijh/feature/footer
 * better detection if price link should be shown in the footer

Pull request #162 from azul/feature/3295-custom-error-pages
 * little bit of documentation
 * i18n for error pages
 * custom error pages for 404 and 500 errors

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

the loading... text on the buttons was not capitalized before.

So in order to change this in a (more or less) single place i added
new button types to simple_form:

button :wrapped - normal button, with loading and an optional cancel button wrapped in the classical bootstrap action div.
    cancel option contains the url to go to when canceling.

button :loading - simple button with loading text capitalized by using i18n (simple_form.buttons.loading)

Conflicts:
	engines/support/app/views/tickets/new.html.haml

Also renamed help to support so it's harder to confuse it with documentation