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

@@ -1,30 +1,33 @@
 $(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) {
-            return
+        if (selectedCollapse.length) {
+            // Toggle collapse
+            selectedCollapse.parent().find(".collapse").collapse({
+                toggle: true
+            })
+
+            // Scroll body
+            $("html,body").animate({
+                scrollTop: selectedCollapse.offset().top - 60
+            }, "slow")
         }
+    }
 
-        // Toggle collapse
-        selectedCollapse.parent().find(".collapse").collapse({
-            toggle: true
-        })
-
-        // Scroll body
-        $("html,body").animate({
-            scrollTop: selectedCollapse.offset().top - 60
-        },"slow")
+    if (hash.startsWith("faq")) {
+        displayFaq(hash)
     }
 
     $(".copy-faq-url").click(function (e) {