frontend: rephrase dashboard pane titles and subtexts

Closes https://gitlab.com/commento/commento-ce/issues/82

frontend/dashboard.html

@@ -175,12 +175,12 @@
         </div>
       </div>
 
-      <!-- General Settings -->
+      <!-- Configure Domain -->
       <div id="general-view" class="view hidden">
         <div class="view-inside">
           <div class="small-mid-view">
             <div class="center center-title">
-              General Settings
+              Configure Domain
             </div>
             <div class="box">
               <div class="row">

frontend/js/dashboard.js

@@ -27,7 +27,7 @@
       },
       {
         "id": "general",
-        "text": "General Settings",
+        "text": "Configure Domain",
         "meaning": "Names, domains and the rest",
         "selected": false,
         "open": generalOpen,
@@ -35,13 +35,13 @@
       {
         "id": "moderation",
         "text": "Moderation Settings",
-        "meaning": "Approve and delete comments",
+        "meaning": "Manage list of moderators",
         "selected": false,
         "open": moderationOpen,
       },
       {
         "id": "statistics",
-        "text": "Statistics",
+        "text": "View Activity",
         "meaning": "Usage and comment statistics",
         "selected": false,
         "open": statisticsOpen,