* Move nested defaults to Config::processConfig()
Fixes log_file when users set log_dir for example.
Removed stuff:
mibdir
dp_autocreate
base_url: setting http/https before config.php is loaded...
moved collectd setting to it's own config file
* add base_url mod back.
I thought that since definitions is called before config.php it was useless, but it changes the built in definition between http and https.