Departure signals

Departure signals

revert root departure

remove unneeded distant

symbols without pole

Max speed light signals NL

Repeated main light

Fix a missing departure signal tagging combination

revert maxspeed_signals.mss whitespace changes

another one

Main repeated states check

Remove NL:light as light forms because of invalid tagging

order

Add support for signal categories like NL:voor NL:hoofd en NL:snelheid

Refactor to NL:hoofd for main signals with speed limit box

Squashed commit of the following:

commit 339512c
Author: Hidde Wieringa <[email protected]>
Date:   Thu Oct 26 20:39:31 2023 +0200

    Update resource URLs as well

commit c6d63a9
Author: Hidde Wieringa <[email protected]>
Date:   Thu Oct 26 20:34:15 2023 +0200

    Modify Dutch icons to SVG

commit 4a2a444
Author: Hidde Wieringa <[email protected]>
Date:   Wed Dec 28 17:03:15 2022 +0100

    Support NL main and distant signals

    Departure signals

    Departure signals

    revert root departure

    remove unneeded distant

    symbols without pole

    Max speed light signals NL

    Repeated main light

    Fix a missing departure signal tagging combination

    revert maxspeed_signals.mss whitespace changes

    another one

    Main repeated states check

    Remove NL:light as light forms because of invalid tagging

    order

Clean up PNG files

The icons are rendered very small. Therefore, a softening filter around the
lights will not influence the rendered result. In addition, the filters
are not supported by Mapnik. This commit removes dashed strokes from the lights,
too.