added airport EBBR
Update ebbr.json
revised scale, fixes
ctr_radius
Merge branch 'gh-pages' of github.com:zlsa/atc into gh-pages

Conflicts:
	assets/scripts/airport.js
Merge branch 'gh-pages' of github.com:stijnsanders/atc into gh-pages
Merge pull request #66 from stijnsanders/gh-pages

added airport EBBR