Fix sorted icons placement

- Move icons to the header of the row. By this way they will play nicely with custom
admin themes (like djangocms-admin-style).
- Also fix icons for Django 1.5 (now the admin looks the same as with Django >= 1.6)

adminsortable/static/adminsortable/css/admin.sortable.inline.css

@@ -2,24 +2,7 @@
     cursor: move;
 }
 
-.sortable .inline-related .module.aligned .fa,
+.sortable .inline-related h3 .fa,
 .sortable.inline-group .module .fa {
-    display: block;
-    float: left;
-}
-
-.sortable .inline-related .module.aligned .fa {
-    margin: 5px 10px 0 0;
-}
-
-.sortable .inline-related.flat-admin .module.aligned .fa {
-    margin: 9px 10px 0 0;
-}
-
-.sortable.inline-group .module .fa {
-	margin: 26px -10px 0 10px;
-}
-
-.sortable.inline-group.flat-admin .module .fa {
-	margin: 34px -10px 0 10px;
+	margin-right: 5px;
 }

adminsortable/static/adminsortable/js/admin.sortable.stacked.inlines.js

@@ -42,7 +42,7 @@
                         success: function() {
                             var fieldsets = ui.item.find('fieldset'),
                                 highlightedSelector = fieldsets.filter('.collapsed').length === fieldsets.length ? 'h3' : '.form-row',
-                                icons = ui.item.parent().find(highlightedSelector).find('.fa');
+                                icons = ui.item.parent().find('h3 > .fa');
 
                             // set icons based on position
                             icons.removeClass('fa-sort-desc fa-sort-asc fa-sort');