Merge pull request #2 from friendica/master

Sync with upstream
If entered event info is not valid, let user try again with the old info still there. Closes friendica/red#648
private forum issues
Merge https://github.com/friendica/red into pending_merge
when removing a channel, check to see if there are any valid hublocs remaining before marking the xchan deleted.
Issue #657
Merge pull request #655 from pafcu/master

Better handling of incorrect info entered in event
document store writability requirements
Merge pull request #658 from zzottel/master

document store writability requirements
Doco - some clean up to install - keep politics out of it, 80 columnise it and
whitespace.
Doco - politics, unwritten pages, links, and stuff.  Nothing major.
you've gotta' be on your toes to catch this bug... though it's been here for about 2 1/2 years and even survived a rewrite. Symptoms are that the archive widget only lists one month (the month when you first posted), and only if your first post was written between the 28th and 31st of whatever month that was.
Merge https://github.com/friendica/red into pending_merge
backtrack on attribution for wall-to-wall comments - triggered too often and unnecessarily.
improved wall-to-wall detection for comments so we can handle Diaspora signing and wall-to-wall attribution correctly.
Do it at the point of submission. This also fixes a potential bug in yesterday's wall-to-wall permission setting,
if it was a local comment to a remote post.
wrong permalink on remote events
update to German strings
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.