beginning of backend file/attachment api
add item revision column and index
enforce the new enhanced permissions (not just simple access controls) on photos - caveat: the default profile photo cannot be restricted. Any such restrictions will be ignored.
file replace option for wall attachments.
file/attachment storage api with revision control - needs a bit more testing but the framework is in place
this should fix xchan photo permissions
expire setting
update friends in common tool now that poco is working
make addon (featured) settings page work
plugin_settings are now feature_settings
when did the ago-time div get renamed?  I don't remember doing that.
debugging of file attachment api - somewhat functional but the attachment info structure in the item table needs to be re-done.
Merge pull request #9 from friendica/master

just to be uptodate