Centralized logging - add multiline indent, remove syslog output by default

[binary1230]

2 things:

1. Add a formatter (which is off by default but can be switched on via INI) that takes any multiline output and indents it. This makes it easier for external log tools to parse our output and keep stack traces (which output multiple lines) together as one logical unit.
2. By default we output to syslog via development-defaults.ini and downstream configuration can't switch this off. Make it so we don't output to syslog by default so that puppet and other things can change this behavior later

[binary1230]

IMPORTANT NOTE: we used to output to syslog by default mostly because it's 1) convenient and 2) if we start filling up the logs with error message spam, syslog will rotate them for us which usually decreases the filesize dramatically when they are compressed.

so it's important for anyone not deploying through our puppet stuff (like Anthrocon) to be aware of this. though, the real answer is ... don't fill up the logs with gigabytes of errors and run out of disk space :)

[kitsuta]

+1