* add custom login ability
* encrypt email password
* allow arbitrary tcp connections
* add db migration script v3 -> v4
* add bug reporting capability with the axe logger
* fix nonexistent folder handling
* enable message upload after sent
* use plain text alternative body when replying to html mails
* Move set-credentials.* -> login-set-credentials.*
* Use login styles for set-credentials
* Make OAuth optional
Use all pgp (sub) keys when en/decrypting a pgp message
Improve input validation for key import
Mark manually imported keys so that key refresh does not revoke them
* Add ng-animate module in libs
* Move error dialog init to app.run
* Include error dialog template only once in index.html
* Fix race condition between ng-repeat, ng-class using ng-animate
