Add cache buster to all GitHub API calls (#449)
Add cache buster to all GitHub API calls (#449)

This should solve issues like #308 and the issues with cached
API responses after deleting an entry
netlify/netlify-cms,Aloomaio/netlify-cms,netlify/netlify-cms,Aloomaio/netlify-cms,dopry/netlify-cms,dopry/netlify-cms,netlify/netlify-cms,netlify/netlify-cms