Just to clarify, the cable going to the switch is what looks like a "switch leg" not the black wire I told you to remove and try.
http://www.electrical-online.com/wiring-a-basic-light-switch-variation-1/
I know what you meant, but learning the correct terminology will help get the right answers and also with searching for information.
My best guess, looking at the pictures, is that the switch is on a switch leg, and the other two cables are part of a string of receptacles, completely separate, the only connections that should be made between the two groups are the ground wires. I may be wrong of course so if removing that jumper doesn't make everything work properly then more troubleshooting may be needed.
What's the issue? breakers trip when turned on? That could be explained if the lighting circuit and the recep circuit are on opposite phases, then you have a dead short with 240VAC across it when you turn the 2nd breaker on...