Fixed up ability to send frames while not connected and to show frames

that were sent within the same window as received frames. Added a new
scripting window that can be used to create scripts that send and
receive messages at runtime - not done but sort of working.

canfilter.h

@@ -0,0 +1,19 @@
+#ifndef CANFILTER_H
+#define CANFILTER_H
+
+#include <stdint.h>
+
+class CANFilter
+{
+public:
+    CANFilter();
+    void setFilter(uint32_t id, uint32_t mask, int bus);
+    bool checkFilter(uint32_t id, int bus);
+
+private:
+    uint32_t ID;
+    uint32_t mask;
+    int bus;
+};
+
+#endif // CANFILTER_H