/close #93

/close #114

I.e. do not delete orphan todos if the protocol names them by ID.
That happens if the todo is created using the web interface.

/close #105

ref #113

ref #94

/close #53

This enables to generate both AStA-style and FS-style (and in theory
other) protocols.
/close #88

/close #87

/close #104

/close #108

This adds default values to default metadata and the option to set it
before compiling the protocol (i.e. while planning to TO).
Additionally, the (dynamic) metadata fields are handled correctly in the
ProtocolForm and metadata is shown while still planning.
Additionally, protocol.start_time is used instead of
protocoltype.usual_time.

/close #47
/close #65
/close #106

Does not work.

ref #107

Enable using multiple authentication backends.
(Samba-)AD and LDAP-Backends are implemented.
Session timeouts are implemented.

/close #17

ref #7

/close #21

/close #45

/close #86

/close #89

If there are todos which have todo.who == current_user.username, show
only them, as there may be quite a lot of open todos in total.

/close #90

/close #92

e.g. [todo:who:what]
e.g. [todo;who]

/close #95

/close #98

/close #99
/close #91

Create LocalTOPs when creating Protocols or DefaultTOPs, not on demand
when necessary, since that created double entries.

reference #96

Rechtschreibung korrigiert (todo-mail)

See merge request !3