Merge pull request #151 from zzottel/master

add [observer] tags and [observer.baseurl]
oauth settings - clarify text
Merge https://github.com/friendica/red into zpull
spice this up a little bit...
admin hubloc page now with content from all hublocs, in next steps I add some tests with zping and reduce the content to known problems.
added new smarty template admin_hubloc.tpl
Merge pull request #152 from MicMee/master

Preparation for maintenance od hubloc/server