Merge pull request #2382 from mrpau/hotfix/2198-Deleting-a-facility-should-NOT-use-a-GET-request

Fix to make a POST request when deleting a facility.
Handle function or list from psutil
Add comment to help future maintainers
Merge pull request #2409 from dylanjbarth/fix_psutil

Handle function or list from psutil
Revert "Add tastypie package."

This reverts commit b0712abe5ee4dabacba57fbe521cf3a6f2027bee.
checkout tastypie from nalanda-rct2