Revert "Fix button label position"

This reverts commit 1c69e1c306186ef5f58e377835ed00a51ffcc955.
ControlLook::DrawLabel() tiny style changes
LayoutUtils: Style fix, remove leading space
LayoutUtils: Use std::max instead of max_c
LayoutUtils: Use floorf() instead of floor()
Fix button label position, try number 2

Create and use BLayoutUtils::AlignOnRect() to position the button label
in BControlLook::DrawLabel().

AlignOnRect(), unlike AlignInFrame(), provides the possibility to return
a rectangle with dimensions greater than the available size.

Add some comments above the methods in LayoutUtils that indicate such.

Also update copyright headers in LayoutUtils and ControlLook