minor progress on error template
setup files for making usgin validation a celery process
celery task for usgin validator
got validation working in a separate process
more celery stuff
moved get_url function into action.py
removed code for usgin celery task
added link to validator service tool
function for returning better getCapabilities urls
error handling for getCapabilities url
Merge branch 'master' into usgin-error-tmpl
Merge pull request #399 from ngds/usgin-error-tmpl

Usgin error tmpl