fix wget call

seqs/tvheadend.sh

@@ -14,16 +14,12 @@ step_1() {
   saveReturn $?
   endReturn
 
-  wget -q0- https://doozer.io/keys/tvheadend/tvheadend/pgp | apt-key add -
+  echo -n "Downloading tvheadend repository key ... "
+  wget -qO- https://doozer.io/keys/tvheadend/tvheadend/pgp | sudo apt-key add -
   saveReturn $?
   endReturn
 
-  if [ -f "$sourceList" ] ; then
-    echo "[WARN] Renaming existing source list to: ${sourceList}.bck"
-    mv "$sourceList" "$sourceList".bck
-  fi
-
-  echo "$sourceEntry" > "$sourceList"
+  addConfig "$sourceEntry" "$sourceList"
 }
 
 step_2_info() { echo "Install/Upate $toolName"; }