Fixed ISOTP Interpreter Window - It functions again.

Also added UDS decoding to the ISOTP window. An attempt is made to see
if a frame looks like UDS and then it is decoded.

Also, some code clean up to remove some compiler warnings. There's a
LONG way to go still.

bus_protocols/isotp_message.h

@@ -9,8 +9,8 @@ public:
     int bus;
     bool extended;
     bool isReceived;
-    int len; //# of bytes this message should have (as reported)
-    int actualSize; //# we actually got
+    uint32_t len; //# of bytes this message should have (as reported)
+    uint32_t actualSize; //# we actually got
     QVector<unsigned char> data;
     uint64_t timestamp;
 };