The yellow things look like resistors to me. Not sure what they are for though... perhaps someone with a Dasmikro can expand on that.

I think the layout looks right (again, I don't have one so can't be entirely sure - no wiring diagram with it?) but for the JR wires, only one needs to be fully soldered onto the ESC. The other one, you'll need to only solder in the signal wire onto the board.