Clean up platform logging
It would be really nice if we had documentation on where every daemon logs to. We should also clean this up a bit so that things log in better files.
example daemons/apps:
- leap_web / rails
- tapicero
- couchdb
- openvpn
- leap_mx
- soledad
- nickserver
- apache
- postfix
(from redmine: created on 2014-07-31, relates #4599, relates #4333, relates #4707, relates #5707 (closed), relates #6083)