Merge pull request #179 from git-marijus/master

reorder items in private-mail - the delete button is on the right side e...
remove the disabled flag on individual permissions and improve the text to show that settings may be inherited. The reason for this change is that we want the individual settings to be stored regardless of the inherited settings, because if somebody changes the higher precedence privacy settings it could leave all their existing contacts with no permissions and this could be a support nightmare.

So this way if somebody starts off with "anybody on the network can send me their stream and posts" and later changes it to "only specific connections can send me their stream and posts", the individual setting will already be set for all their connections. The previous behaviour is that this setting would have been disabled so none of their existing connections will have this specific permission. Old-timers who were here and made lots of connections before this commit - will have to edit all their connections if they change their privacy settings from lesser restrictive to be more restrictive.
Merge https://github.com/friendica/red into zpull
preserve the source owner when creating a delivery fork so that we can uplink back to them without any ambiguity.
provide config for preferred directory server
directory sort links on sidebar
turn off endless scroll if we have no more content to load - currently for mod_display, need to add to other content modules
attachment icons revisited
fix endless scroll
template and icons for categories and "file as"
i guess we should use .active class for all selected links.