The current Shift+Alt handling is buggy. The keyboard won't work frequently.
It dislikes system-side Alt (VK_MENU) key handling.
It seems like Shift+Alt handling should be in kernel.
CORE-10667
Implemented the following actions: stick the window on the left/right or maximize it,
with the following shortcuts:
- Win key + Arrows;
- drag to left/right screen border;
- double-click on top/bottom.
CORE-12845
