feature (reaction-roles): Configuration command.

New monolithic `rroles` configuration command.
Complete logging and setting implementation in RR tracker.
Improve strings in RR settings.

Add special `NEWPAGE` manual section parsed by the help command.
Add `tabulated` method for `ObjectSettings` for easy display.
Add `_parse_create` switch for the `Role` setting type.

bot/settings/base.py

@@ -257,6 +257,16 @@ class ObjectSettings:
         cls.settings[name] = setting
         return setting
 
+    def tabulated(self):
+        """
+        Convenience method to provide a complete setting property-table.
+        """
+        formatted = {
+            setting.display_name: setting.get(self.id, **dict(self.params)).formatted
+            for name, setting in self.settings.items()
+        }
+        return prop_tabulate(*zip(*formatted.items()))
+
 
 class ColumnData:
     """