Button stays "pressed" when clicked "rapidly" in non-continuous rendering mode...
Calling Gdx.graphics.requestRendering() in a ClickListener doesn't solve the problem.
One might change the `visualPressedDuration` like this :

```
// hach for releasing the click in non continous rendering
ClickListener.visualPressedDuration = 0f;
```

but it's pain in the ass when switching from continuous to non continous rendering.
Add to methods to get the max font size that ensure that n chars from a font fits entirely within a desired height and/or width.
Revert "Add to methods to get the max font size that ensure that n chars from a font fits entirely within a desired height and/or width."

This reverts commit 8b1ab483e26032b561e360598fc8280cd80e4f2f.
Merge pull request #1781 from avianey/master

Button stays "pressed" when clicked "rapidly" in non-continuous rendering