rename the plugin to poweradminbf4
renmae the config file to plugin_poweradminbf4.ini
update automated tests to call the new plugin
get rid of the !gunmaster command as this game mode does not exist in BF4
update MIN_BF4_PARSER_VERSION
update the config files for the serverconfig feature
Merge branch 'get_rid_of_bf3_refs' from Thomas

Conflicts:
	README.rst