Regression: minimum window size much larger.

See attached.

The minimum window size of Qt Creator is much larger than in previous versions. In particular, this hurts customers who:
Have fewer than ~720 pixels vertical.
Have fewer than ~1920 pixels horizontal, and would like to open 2 Qt creator windows side-by-side.

I should note that the minimum window width is exactly half the width of my monitor (1920*1080).