Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/src/commit/e5e4e705ce402856a4800ebf4c0cc163d41b58b0/board/rbc823 You should set ROOT_URL correctly, otherwise the web may not work correctly.
upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
 
 
 
 
 
 
u-boot/board/rbc823
Peter Tyser 858290178f ppc: Enable full relocation to RAM 16 years ago
..
Makefile
config.mk
flash.c
kbd.c stdio/device: rework function naming convention 16 years ago
rbc823.c Fix boards broken after removal of legacy NAND and DoC support 16 years ago
u-boot.lds ppc: Enable full relocation to RAM 16 years ago