Brakes are not responding at all?

After pulling out of a store the other day I noticed my brakes hissing at me. And they were not doing anything as I applied pressure to the pedal. Not even pumping the hell out of them provoked any sign of a response. Cleaned the lines out, refilled and bled the brakes. Still Nothing.
I replaced the brake booster and thought that should do it. Well, they are no longer hissing at me making that mocking air sound, but I still cannot get them to respond. I checked each of the calipers. I even pulled the hoses off. There is fluid coming out of them but no matter what I have tried the calipers do not respond to me.
The caliper's function if they are not on the vehicle but I do not know what else to replace or adjust. I have been struggling with this for the last 10 days. Still cannot figure out what else to do.

Also, I'm not sure what the other port is for between the two lines running to the back brakes on the ABS block or whatever it is the lines all come together at. And brake lights are now stuck on, so I have been unhooking the battery. They stay on even when the car is off. Hoping that it is just the pedal switch. But you never know.

Any help or suggestions about what to do or change out next would be appreciated. Should I replace the Master? I'm not sure if this is an issue with one of the valves inside being stuck open or closed, or even how to narrow it down.
I thought the process of deduction would have helped me out a bit more, but I feel as if I am just circling the drain with this car now.