Removed unused scrap file
Problem: if zauth can't load password file, says nothing

Solution: issue a warning if the password file doesn't exist.
Merge pull request #847 from hintjens/master

Trivial improvement to zauth
Removed zring man pages
Removed extra blank line at start
Problem: need to generate multiversion man pages for API site

Solution: move tooling into ztools project as done for ZeroMQ.
Merge pull request #848 from hintjens/master

Fixing online API docs
Merge remote-tracking branch 'upstream/master'