Add odidown gem
update odidown version
ignore config
load dotenv before bundler.require to fix Plek
Attach news item images
Don't require virus scan in order to display.

Temporary fix, pending resolution of theodi/asset-manager#3
pull in embed changes from odidown
Generalise URLs stubbed in tests
Load configuration manually at start of tests
Fix asset manager paths for stubs
Include NewsEdition video
Attachment fields aren't needed in RABL
Temporarily disable virus scanning test

Will need reverting when theodi/asset-manager#3 is fixed
Load asset-manager bearer token from environment

And provide instructions for generating it.
Merge branch 'refs/heads/master' into asset-manager

Conflicts:
	Gemfile.lock
Merge pull request #7 from theodi/asset-manager

Asset manager configuration