- added configuration page (config.php) for web-interface settings and NZBGet-server settings;
- added the commands to start and shutdown NZBGet-server;
- removed the check for file nzb-extensions by uploading files, since NZBGet can now process other files too (via nzbprocess-script);
- reworked the storing of settings to make the updates of web-interface easier in the future (old settings can be keeped, new settings will be automatically initialized with default values);
- the name of all settings were changed in order to be more consistent with NZBGet-server (no underscores, FirstWordUpperCase);
- improved error reporting, if connection to server fails.
Screenshots of Settings-page: