added IdMixin
added in_monitor_agent
in_monitor_agent: move debug_mode flag from config file to the query_string in a HTTP request
Merge branch 'id-mixin' into monitor_agent
added PluginId module (formerly named IdMixin); Input and Output classes include PluginId by default
in_monitor_agent: added more comments
in_monitor_agent: added debug messages
in_monitor_agent: uses LTSV format at /api/plugins and JSON format at /api/plugins.json
Merge branch 'monitor_agent'