Original fix introduced in 528d15 was not correct.
The problem is that `SystemParametersInfo` uses DPI that current session
started with.
We should use `SystemParametersInfoForDpi` (available since Win10 1607)
that returns properly scaled font size.
Fixes#1110
If skin doesn't specify font to be used (such as `Classic Skin`) we will
use default system font (used for menus).
But we didn't scale the font size according to DPI.
This commit will fix that.
Fixes#1110
Debug StartMenuDLL used to not find skins when put to Open-Shell
installation folder.
Now it will try to look for skins in default location (Skins folder in
the same folder as DLL) and use alternative (Skins folder one level up)
if not present.