file not needed as we want the app to use density specific app icon
only the actual icon was clickable but not the entire action icon area
Merge branch 'master' of github.com:piwik/piwik-mobile-2
refs #5285 added some dummy piwik mobile beta icons. should get some better looking ones later
refs #5285 track to a different site
refs #5285 added icons for google play, as mentioned will update icon later
updated app name and id for beta version