Pluggable page templates
Added mod returning a list of known hubs, for a lightweight hub crawler
added directory status to siteinfo
useless file: knownhubs
Merge pull request #609 from tuscanhobbit/dev

Dev
Merge pull request #608 from beardy-unixer/master

Pluggable page templates
allow site specific templates, css, js, whatever
Merge https://github.com/friendica/red into pending_merge
that's why remove_obsolete_hublocs() isn't telling anybody when it does its thing, I forgot to uncomment the bit that tells everybody after I tested it. I needed extensive testing to make sure we didn't accidentally wipe out all hublocs everywhere. Testing went fine so I just assumed it was all working as planned; but went back today to find out why I wasn't told of a recent change.
Merge remote-tracking branch 'upstream/master'