removed hardcoded occurrences of "justask"

app/views/static/_front.html.haml

@@ -1,7 +1,7 @@
 .jumbotron.j2-jumbo.text-center
   .container
     = render 'layouts/messages'
-    %h1 justask
+    %h1= APP_CONFIG['site_name']
     %p Ask questions, give answers and learn more about your friends.
     %p
       %a.btn.btn-primary.btn-lg{href: url_for(new_user_registration_path)}
@@ -16,7 +16,9 @@
       %h3
         Ask and answer questions
       %p
-        With justask you can ask people questions and answer questions from other users or unregistered people.  Want to know something more?  Keep the discussion ongoing in the comments!
+        With
+        = APP_CONFIG['site_name']
+        you can ask people questions and answer questions from other users or unregistered people.  Want to know something more?  Keep the discussion ongoing in the comments!
     .col-md-4.col-sm-4.col-xs-12
       %h3
         Follow users and get followed

app/views/static/about.html.haml

@@ -14,7 +14,9 @@
       .panel.panel-default
         .panel-body
           %h3 The Team
-          The people behind justask!
+          The people behind
+          = succeed '!' do
+            = APP_CONFIG['site_name']
           %br/
           .media
             .pull-left

app/views/user/_account.html.haml

@@ -2,7 +2,7 @@
   = render 'user/settings_tabs'
   .col-md-9.col-xs-12.col-sm-9
     .alert.alert-info
-      justask currently only supports avatars over
+      We currently only support avatars using
       = succeed ',' do
         %a{href: "https://en.gravatar.com"} Gravatar
       after you set yours up, use the E-Mail you are using for it on here as well, we will directly use this image then!