Initialize lua's PRNG

(and push to 2201)
Re-done the config part.

- rp.load_config now uses the config function provided by Radiant, which is reading the setting from user_settings.json.
- rp.load_config will attempt to read mods.[mod_folder_name] and comforts it, just as it did before, to your template
- rp.get_config was added to read a single value. This, again, checks the type (recursively for tables).
Re-factored code and added call handler requester
Accept less comforting values.
Better release 2300 now. Only have five minutes left.