FAQ page bug fixes

- link to the first question didnt worked (first question has ID of 0, which was treated as false)
- sometimes the copy button didnt worked (was returning from the script without being in a function)

src/js/faq.js

@@ -1,21 +1,19 @@
 $(document).ready(function() {
     var hash = decodeURIComponent(location.hash.substr(1))
 
-    if (hash.startsWith("faq")) {
+    // use an function so we can return early
+    function displayFaq(hash) {
         var faqId = parseInt(hash.substr(3)) - 1 // IDs in faq start from 0
 
         // Check if FAQ is a number and is not lower than 0
-        if (!faqId || faqId < 0) {
+        if (isNaN(faqId) || faqId < 0) {
             return
         }
 
         var selectedCollapse = $("#faqcollapse-heading-" + faqId)
 
         // Check if element exists
-        if (!selectedCollapse.length) {
+        if (selectedCollapse.length) {
-            return
-        }
-
             // Toggle collapse
             selectedCollapse.parent().find(".collapse").collapse({
                 toggle: true
@@ -26,6 +24,11 @@ $(document).ready(function() {
                 scrollTop: selectedCollapse.offset().top - 60
             }, "slow")
         }
+    }
+
+    if (hash.startsWith("faq")) {
+        displayFaq(hash)
+    }
 
     $(".copy-faq-url").click(function (e) {
         e.preventDefault()