Demo page: add links to the wide coverage translation page and the android app

demos/index.html

@@ -10,6 +10,9 @@
 <BODY>
 <H1><a href="../"><IMG SRC="../doc/Logos/gf0.png" alt=""></a>Grammatical Framework Demos</H1>
 
+<p><a href="translation.html">Wide coverage translation with GF</a>
+<p><a href="app">The Human Language Translator</a>: 
+   a mobile speech and text translation app for Android.
 <p><a href="http://www.grammaticalframework.org/demos/phrasebook/">Tourist
 Phrasebook</a>