Added a revised SOD-523 footprint that has a cathode band on the silkscreen and the pins numbers are swapped to match KiCAD symbol conventions (1 for anode, 2 for cathode).
Added a few SOD-523 diode assocations.
Created SOD-123 footprint.
Assigned SOD-123 footprint to a diode.
Added footprint for CDNBS04 bridge rectifier.
Added footprint assocation for the two bridge rectifiers.