Add some documentation and code style

app/static/js/nopaque.js

+/*
+ * The nopaque object is used as a namespace for nopaque specific functions and
+ * variables.
+ */
 var nopaque = {};
 
-
 // nopaque ressources
 nopaque.socket = io();
 
@@ -28,7 +31,6 @@ nopaque.forms.init = function() {
       progressModal = M.Modal.getInstance(progressModalElement);
       progressModal.options.dismissible = false;
       abortRequestElement = progressModalElement.querySelector(".abort-request");
-      // just use request.abort?
       abortRequestElement.addEventListener("click", function() {request.abort();});
       progressElement = progressModalElement.querySelector(".determinate");
     }
@@ -87,8 +89,7 @@ nopaque.navigation.init = function() {
 
 
 nopaque.toast = function(message, color="") {
-  var toast;
-  var toastActionElement;
+  var toast, toastActionElement;
 
   toast = M.toast({classes: color,
                    html: `<span>${message}</span>