Add CTCP commands.

Add a few more basic CTCP commands, notably CLIENTINFO, telling one what
commands dbot supports.

Fixes/goes towards fixing #268.
Merge pull request #461 from zuzak/ctcp2

Add CTCP commands.
Fix spotify formatting mess [Close #459]
Merge branch 'master' of github.com:reality/depressionbot
Merge github.com:reality/depressionbot into database
fix for the bug with infostring i introduced fixing undefinedxundefined