Added a variety of additional information and fixups, to the BOM table especially:
* added some missing jumpers (JP1/J11/A13_W/A14_w)
* jumpers were unclear outside of KiCad, added "silkscreen" column with notes
* also added a "socket" column for parts if want to buy narrow/wide holder for any chips
* some jumpers incorrectly had "right angle" listed where straight header needed
* the PCBWay link was broken, updated to revH