clip LED must be reset after a server change

ChangeLog

@@ -30,10 +30,13 @@
 - bug fix: server window stop updating after minimized, coded by AronVietti (#355, #383)
 
 
-TODO support clip indicator for bar meter as well
+TODO clip LED on channel faders goes on too early (compare to input level meter clip LED)
+     -> only 3 of 4 bits of the channel level protocol are actually used, one bit is wasted
 
 TODO the new translation loading does not work on MacOS
 
+TODO support clip indicator for bar meter as well
+
 TODO https://github.com/corrados/jamulus/issues/341#issuecomment-647172946
      - generate .qm on compile time with lrelease
      - download nsProcess.dll on Windows installer creation instead of put it in the repo

src/audiomixerboard.cpp

@@ -321,6 +321,7 @@ void CChannelFader::Reset()
     pcbSolo->setChecked ( false );
     pcbGroup->setChecked ( false );
     plbrChannelLevel->SetValue ( 0 );
+    plbrChannelLevel->ClipReset();
 
     // clear instrument picture, country flag, tool tips and label text
     plblLabel->setText ( "" );

src/levelmeter.h

@@ -95,6 +95,6 @@ protected:
 
     QTimer          TimerClip;
 
-protected slots:
+public slots:
     void ClipReset();
 };