Github authentication: no longer require repository permissions when
connecting RhodeCode account with Github login.
Api: added new function get_repo_refs. This was accidentally exposed in our
documentation as valid function, but wasn’t implemented. This function is now
backported from next major release due the documentation issues.
Api: Fixed a regression in API validation on create_* functions.
Before this fix it always converted given data to lowercase.
System info: fixed reporting of free inodes as taken.