BUGFIX: Bar blinking when running backwards

The bar does not blink anymore when it is paused, after it went back.
BUGFIX: Pause fixed, bar cannot become too long

Pressing pause, is now fine in any moment. It was broken, when the timer
had already ran back.
Bar does not count > it's intended width
removed Behaviour Tab from properties
added check,so invalid minute values cannot be set
changes version to 0.2.1