Store information about protocol, server IP and filename of retrived dotconfig.
Information is stored in:
-- /tmp/dot-config_proto
-- /tmp/dot-config_host
-- /tmp/dot-config_filename

When dotconfig is local don't store source information.
When web-interface changes dot-config, remove source information because after
changes configuration is stored locally.
This is going to be used by SNMP
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>