Version 0.2.6

* reset button state from 'loading...' after failed login attempt
  (#4231)
* use https sources in Gemfiles and documentation(#4109)
* include Gemfile.lock to prevent unintended updates (#4174)
* fixed download urls to get latest versions for mac, android and
  windows
* test api login with umlauts in password
Merge branch 'develop'
Version 0.2.7

* ensure that we only copy files for customization when restarting the app (#1300)
  not every time a rake task is run (especially since some rake tasks get run
  as root!)
* improvements to the download button
  (proper localization, better image, better hooks for customization)
* added support for easier customizations via "config/customization" directory (#1300)
* log json request errors and their backtraces
* show Ticket with the appropriate error messages. (*4453)
* update readme to require ruby 1.9.3 instead of 1.8
* Token.destroy_all_expired to cleanup expired tokens (#4411)
* use the account lifecycle from UsersController#destroy (#4216)
* destroy all tickets created by a user when account is destroyed (#4216)
* integration test for blocking handles after account destroyed (#4216)
* disable identities to block handles after a user was deleted (#4216)
* notify user their account was successfully deleted (#4216)
* Fix button to enable account (#4246)
Merge branch 'develop' - hotfix for database change
Merge remote-tracking branch 'origin/master' into develop