This is useful for some nice upcoming desktop and mobile integration

Show the different editions to the user. Used in the status call, on the personal settings page and in the updater to update to the next available version from the same edition.

add status file. useful for external administration. show the ownClopud version at least in the config dialog.

Start of the refactoring. Commit is quite big because I forgot to use git right from the beginning. Sorry.