Initial Android Application.

Created Android App with MainActivity containing a WebView
and a Settings page to configure URL of Penguin. Settings page
not yet working.
Refactored auto generated settings page to initial settings. Still not used.
Use server url from settings page. Web view refreshed when settings changed.
WebView now defaults to static page on github telling user to configue a server url.
Added Penguin icon.
Increased android app version.
Merge branch 'master' of https://github.com/malcyL/penguin-android