Store raw parameters from .conf files in process/group config objects

Store raw parameters from the .conf file for each process/group with the config objects. This allows setting custom parameters per program/group that can be used by by plugins utilizing the rpc interface.

Example:
[program:xyz]
command=/bin/cat
custom_param1=12345
custom_foo=bar

All key/value pairs in this section would be available via this process's .config.raw_params as a dict