[HDE Mod] RMG: Fix RMG dialog element visibility for non-standard DPI settings

[potmdehex]

The RMG dialog is modified at run-time using code which does not account for e.g 125% or 150% DPI set in Windows settings. This means users with such settings will see an incorrectly displayed RMG dialog where elements overlap and/or are not shown.

Code & comment:
https://github.com/potmdehex/homm3tools/blob/master/map_editor/maped_rmg/rmgdialog_fix.c#L206

Done definition:
RMG dialog should display properly regardless of Windows DPI settings.

This issue was reported by DaNinja, Hightower and xiaotang923.

[potmdehex]

Fixed in branch rmgdialog-dpifix:
https://github.com/potmdehex/homm3tools/tree/rmgdialog-dpifix