saslserv/main: accept grouped nicknames

Due to popular request, finish what was started by ff19f558a24d.
Can't say I like this, but it was easy to do, and I guess I should
continue with the "usability" line anyway.
saslserv/main: _actually_ accept grouped nicknames

I forgot to actually test with NICK/USER/CAP END, so never noticed the
"account ?? dropped" error. Sigh.
saslserv/main: fix some things I broke with the authzid stuff

I've no idea why I added it. Nothing needs it and all it does is break
things. I should just revert it for 7.2 I guess.
core: time_ago(): skip seconds for >1w durations

Make the output shorter. Once it reaches months or even years,
one-second precision isn't that useful anymore.
chanserv/flags: clean up do_list()
chanserv/flags: show absolute timestamp as well
core: time_ago(): make output much shorter (1d 2h 3m 4s)
JSONRPC transport module
Updating translation to spanish

Add new translations, and editing other translations
Merge pull request #356 from Miguel2706/patch-1

Updating translation to spanish
Allow html_helpfiles.sh to run-in-place
contrib: Bump revision to master
Remove all trailing whitespace
Merge branch 'master' of https://github.com/atheme/atheme
Fix intending
JSONRPC doc
Merge pull request #357 from errietta/jsonrpc

Add JSONRPC transport
libathemecore/conf: warn about spaces in passwords

Closes #358
Update contact
Cosmetic change to support help messages for subcommands (closes #359)