NEW.txt: add ticket numbers #1852, #1972
AUTHORS: add Henrik Bieler, Andreas Wasserbauer
po: update Finnish translation
dlgTarget: remove std::min/max "using" directives

Unused.
dlgWaypointDetails: use UIGlobals::GetMainWindow()
dlgTarget: click on waypoint name opens waypoint details

The old WndProperty was kind of redundant: we have left/right buttons
for touch screens and the Altair uses the rotary knob to select the
task point.  The shortcut to the waypoint details dialog seems more
useful (TRAC #1967).
Data/Input: remove "Waypoint Details" menu item

This is redundant now that we can open the waypoint details from the
target dialog (TRAC #1968).
Dialogs/Waypoints: use nullptr instead of NULL
Dialogs/Task: rename source files
dlgWeather: move to Dialogs/Weather/
Dialogs/NOAADetails: use UIGlobals::GetMainWindow()
Makefile: add variables MKDIR and NUL
dlgTaskHelpers: remove useless question "Save task?"
dlgTaskHelpers: add caption to text entry dialog
dlgTaskHelpers, LineSectorZoneEW: change label case

Merge translatable string "Gate Width" with "Gate width".
dlgTaskHelpers: move validation errors to ValidationErrorStrings.cpp
ValidationErrorStrings: use an array instead of switch/case
ValidationErrorStrings: remove newline characters

Don't bother translators with newlines.
TaskValidationError: remove unused INVALID_FAI_TRIANGLE_GEOMETRY
KeyholeZone: add method GetInnerRadius()