Added correct stress mark for "orchester" in list, and add rule for "Konzert"

dictsource/de_list

@@ -870,6 +870,7 @@ november	$2
 numero           $1
 
 oboe            o:b'o:@
+orchester	$2
 orgie            $alt
 ok              o:k'e:
 oktober	$2

dictsource/de_rules

@@ -1443,6 +1443,7 @@ formal) ie         =I@
      _) zer (@P3   tsEr
      _) zere (b    tse:re:
      _) zere (m    tse:re:
+    kon) zert	ts'Ert
         ziell      tsj'El
      _) zie (ge@P3 ts'i:
         zitat      tsi:t'A:t