Merge pull request #659 from zzottel/master

update to German strings
upd nl
upd nl 2
Provide comment box for PERMS_AUTHED items.  Presently only commentable from owners wall.
Merge pull request #660 from beardy-unixer/master

Provide comment box for PERMS_AUTHED items.  Presently only commentable ...
diaspora walltowall comment signature, force update.
API: xchan get/create
generalise the output format of xchan_fetch so it matches the input format
I'm speechless. This is just reckless. Set a context flag in text using a context trigger character which is likely to be present in that text already. Without escaping any previous instances of that character. Grrr.
don't offer forum (@name+) completion in comments, since it won't do anything.
doc updates
string update
don't decrypt the message body more than once.