Ctcp: Fix regex for PING
Revert "Ctcp: Fix regex for PING"

This reverts commit a27f62a0aa39cfc2c7d3721a6da0652552b6f8a9.

I accidentally pushed this to the wrong branch.
Merge branch 'testing' of git://github.com/ProgVal/Limnoria into testing
Merge branch 'testing' of git://github.com/ProgVal/Limnoria into testing
irclib: Make SASL messages easier to understand

The logs are meant to be understandable by humans, and not everyone
might know AUTHENTICATE is a SASL command.

[ci skip]
irclib: Remove some useless SASL debug messages
irclib: Add support for additional SASL numerics
CONTRIBUTING.md: use proper language && fix links.

The links went to supybot.fr.cr where the website moved away long time ago.
README.md: Sanify topis & fix IRC links.

IRC links were going to irc.freenode.net which is CNAME for
chat.freenode.net .
Merge pull request #586 from nyuszika7h/update-sasl

Some updates to SASL
Merge pull request #587 from Mkaysi/readme-contributing

Update CONTRIBUTING.md and README.md.