PCB review

[gkasprow]

• avoid shorting pins like this - it's a problem for AOI
  
• separate traces - they are tightly coupled so need to have higher spacing
  
• the same applies to HDMI traces
  
  -[ ] PoE converter should have 500V isolation between primary and secondary. Follow approach from Stabilizer. Just add a PCB rule
  -[ ] fit PCB to the standard metal enclosure. The RPI consumes a lot of power and needs ability to evacuate the heat