post process improvements

[aaronjridley]

Improve post_process.py:

• Add a stop file
• Reload remote file every loop
• Write documentation for it
• Modify Makefile so it is linked to run directory
• Modify so remote file doesn't have to be present

[aaronjridley]

Remove the fortran post processor and make it in python. This will make it so that the code can run on the front ends of pleiades again instead of having to tar and zip the files.

[aaronjridley]

Most of this is done. Just need to write documentation and add to the makefile.