puppetboard/app.py: Adding an environment filter for displaying Fact names (#295)
puppetboard/app.py: Adding an environment filter for displaying Fact names (#295)

This resolves #276

Current behaviour of the Facts page would query the fact_names endpoint
regardless of environment. This update would query the Facts endpoint,
extracting each unique fact name known to the environment.
stoyansbg/puppetboard,stoyansbg/puppetboard,mterzo/puppetboard,voxpupuli/puppetboard,johnzimm/xx-puppetboard,grandich/puppetboard,mterzo/puppetboard,johnzimm/puppetboard,tparkercbn/puppetboard,johnzimm/xx-puppetboard,tparkercbn/puppetboard,grandich/puppetboard,james-powis/puppetboard,mterzo/puppetboard,grandich/puppetboard,grandich/puppetboard,puppet-community/puppetboard,johnzimm/xx-puppetboard,mterzo/puppetboard,puppet-community/puppetboard,johnzimm/puppetboard,puppet-community/puppetboard,johnzimm/puppetboard,stoyansbg/puppetboard,voxpupuli/puppetboard,james-powis/puppetboard,johnzimm/xx-puppetboard,voxpupuli/puppetboard,tparkercbn/puppetboard,tparkercbn/puppetboard,james-powis/puppetboard