Fixed a nasty bug that could cause the whole program to crash when

changing ID filters. Made the new connection screen update to
show the set baud rates. Added the ability to set Single Wire mode on
the connection window but it actually doesn't work yet.

canframemodel.cpp

@@ -323,18 +323,23 @@ void CANFrameModel::addFrame(const CANFrame &frame, bool autoRefresh = false)
 
 void CANFrameModel::sendRefresh()
 {
+    mutex.lock();
     qDebug() << "Sending mass refresh";
+    QVector<CANFrame> tempContainer;
     beginResetModel();
-    filteredFrames.clear();
-    for (int i = 0; i < frames.count(); i++)
+    int count = frames.count();
+    for (int i = 0; i < count; i++)
     {
         if (filters[frames[i].ID])
         {
-            filteredFrames.append(frames[i]);
+            tempContainer.append(frames[i]);
         }
     }
+    filteredFrames.clear();
+    filteredFrames = tempContainer;
     lastUpdateNumFrames = filteredFrames.count();
     endResetModel();
+    mutex.unlock();
 }
 
 void CANFrameModel::sendRefresh(int pos)
@@ -359,6 +364,8 @@ void CANFrameModel::sendBulkRefresh(int num)
     if (num == 0) return;
     if (filteredFrames.count() == 0) return;
 
+    mutex.lock();
+
     if (!overwriteDups)
     {        
         if (num > filteredFrames.count()) num = filteredFrames.count();
@@ -369,6 +376,7 @@ void CANFrameModel::sendBulkRefresh(int num)
     {
         sendRefresh();
     }
+    mutex.unlock();
 }
 
 void CANFrameModel::clearFrames()