Revert "enabled core_library & filefield_nginx_progress"

This reverts commit 16dadc0c4d50e00daf49923c85fa6fbde281966d.
Revert "Revert "enabled core_library & filefield_nginx_progress""

This reverts commit 25ab3376e2d2d4e66fcf6440ab82c7fdb98674dc.
Revert "removed mtech.com stuff"

This reverts commit 55108b661267a9db39ac119fc519dc58c02839a0.