New icons from Andrzej Ambroż / jendrzych:
-New trash icon for deleting ID's and other data (currently unused)
-New icon for the Grease Pencil select between strokes mode
-New icon for Proportional Editing Root Falloff curve
Also adjustments for Jump to Next / Prev. Keyframe, Camera ObData, Point Light ObData, Light Probe Object and ObData, Collection & Save icons.
this allows for updating icons without committing a new PNG each time
(which is inefficient with git). The data files are converted into a
PNG at builds time and used just as they were before.