[Lazarus] Note to new high-DPI icons

[Werner Pamler]

Am 10.12.2017 um 11:39 schrieb Werner Pamler via Lazarus:
> I contacted Ally and asked him to modify these icons.

Done in r56689 (incl the TToggleBox). Still not perfectly visible on 
black background, but visible at least...  If you want the text brighter 
you should create your own png icons (the svg sources are on 
ccr/image_sources), overwrite the existing ones in 
(lazarus)/images/components, recreate the res file by executing the 
corresponding script in (lazarus)/images and rebuild the IDE.