make add_job_table migration actually work

;)
delegate to separate pilbox server to resize and proxy images
Remove imageproxy, delegate to another service
fix unit tests w/r/t pilbox
add PILBOX parameters to config.py template
Merge pull request #33 from thedod/20141214-add_job_table-fix

make add_job_table migration actually work
Merge branch 'master' into deployment (pilbox saga)