Bouncing Logo

Classic TV and DVD player screensaver app for smart devices, resembling old-school screensavers which bounced a logo of DVD or other from one screen corner to another and thus prevented static image from burning-into the screen.

Bumping up web app version to `v1.3.1` which now calculates movement speed based on time rather than window redraw event that varies across screens and usually is dynamic, thus noticeable.

Two Android-specific items addressed:

* #8 - remove not needed network/internet permission;
* #7 - implement immersive (full-screen) mode.