slightly prettier source view

src/skins/vector/css/organisms/ViewSource.css

@@ -1,3 +1,21 @@
+/*
+Copyright 2015 OpenMarket Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 .mx_ViewSource pre {
     text-align: left;
+    font-size: 12px;
+    padding: 0.5em 1em 0.5em 1em;
 }