Add IdentitySafeLogging trait to sanitize logs

This removes sensitive information from the logs.
Add safe logger to other parts of Identity
Removed gallery lighbox ab test
Update logging in Identity API client now uses safelogger
Add log sanitisers for some sensitive JSON strings
Remove SafeLogger factory method

Encourage people to use SafeLogger as a mixin. This is achieved by
having SafeLogger explitictly replace the Logger found in the client.
Blockquotes do not perturbate the flow of the article when a card is next to it
Adding pageviews graph
Format time nicely
Bit of style to the links
Formatted time properly
Right hand card only sticks to the bottom of the article itself
Set time range to 2 hours for pageviews
Tag builds for PROD continuous deployment after integration tests pass.
Merge pull request #1444 from guardian/continuous-deployment

Tag builds for PROD continuous deployment after integration tests pass.
Added proper deduplication to right hand story package
Wrapped right hand card markup in switch
Tightened up design a bit and added some resposiveness
Unnecessary comment
adding video duration