Alpha: Turn random into a campaign

This patch adjusts the behaviour of random so that when clicked you
have an easy way to navigate to another random page without having to
reopen the hamburger menu
1 saved click for the win!

This will stop the KeepGoing campaign from showing after a first edit
to avoid the situation where 2 CTAS are open.

We may want to investigate with designers whether opening a CTA should close
any existing CTAs..

Change-Id: Iddfc0f8ddc4fc35f8b0ef7cf2f7c0c5ebc51556f
Merge "Alpha: Turn random into a campaign"