Merge branch 'chat-title' into 'develop'

Improve Chat site-title

see https://projects.unl.edu/projects/unlchat/tasks/15

See merge request !105

sharedcode/localSiteLinks.html

 
 <link rel="home" href="http://www.unl.edu/" title="UNL" />
+
+<script src="/ucomm/sharedcode/scripts/top_level.js"></script>

sharedcode/scripts/top_level.js

+
+// Set the site title for TOP level sites so that the intro text is nicer (and the site title changes)
+var visitorchat_config = {
+	'site_title' : 'UNL'
+};