Added groups & permissions. Fixed 7tv reconnection. Added more subcommands for refresh.

Chat/Groups/Permissions/IGroupPermissionManager.cs

@@ -0,0 +1,11 @@
+namespace TwitchChatTTS.Chat.Groups.Permissions
+{
+    public interface IGroupPermissionManager
+    {
+        void Set(string path, bool? allow);
+        bool? CheckIfAllowed(string path);
+        bool? CheckIfAllowed(IEnumerable<string> groups, string path);
+        void Clear();
+        bool Remove(string path);
+    }
+}