fixed iss936: BadRequestException when opening email
fixed iss979: App info visible
fixed iss1016: Supported browser list does not contain Safari desktop and Blackberry browser
fixed iss980: Fixed width mails not scrollable horizontally
fixed iss1005: Android < 4.4 App Back to login page button wraps on registration page.
fixed iss1012: Android 4.4 App: BadPadding when open attachment from external
fixed iss977: File can not be attached
fixed iss1033: Android < 4.4: Download of attachments not possible
Merge branch 'master' of github.com:tutao/tutanota
cleanup