[15] Disable "refresh" menu item while StatusAsyncTask is running
[16] Remove CardUI padding on small screens
[17] Re-enable CardUI slide-in on refresh
[18] Automatically check for updates
[19] Remove unneeded background overdraw in MainActivity
[20] Add option to change download directory
[21] Add option to show changelogs
Remove unused mdpi resources
[22] Re-enable "refresh" button _after_ UbuntuManifestAsynTask is done
[23] Remove dependency on nineoldandroids