[Domains] Add Droplr
[Domains] HTTPS only for YouTube players for performance reasons - as they do 301 redirects from http to https anyway
Merge branch 'master' into develop
fixed isHttps test for relative protocols.  indexOf('//:') should have been indexOf('//') - a simple regex is more accurate here.
Merge branch 'master' of github.com:joelabair/iframely into joelabair-master
Merge branch 'joelabair-master' into refactor