Skip js deps installation if there's no jsdeps.json and install-jsdeps.sh

bin/installto.sh

@@ -100,6 +100,7 @@ if (strtolower($input) == 'y') {
   }
 
   // check if js-deps are up-to-date
+  if (file_exists("$target_dir/jsdeps.json") && file_exists("$target_dir/bin/install-jsdeps.sh")) {
     $jsdeps = json_decode(file_get_contents("$target_dir/jsdeps.json"));
     $package = $jsdeps->dependencies[0];
     $dest_file = $target_dir . '/' . $package->dest;
@@ -108,6 +109,10 @@ if (strtolower($input) == 'y') {
         system("cd $target_dir && bin/install-jsdeps.sh");
         echo "done.\n\n";
     }
+  }
+  else {
+    echo "JavaScript dependencies installation skipped...\n";
+  }
 
   echo "Running update script at target...\n";
   system("cd $target_dir && php bin/update.sh --version=$oldversion");