Add single page notification button to consultation template

[danacotoran]

Add support for the single page notification button to the consultation
template. The button will not appear until the feature is enabled on
pages with this content type.

Seeing as the button is always grouped together with the published dates
component I created a new published_dates_with_notification_button
partial to be shared between publication, detailed_guide and
consultation.

https://trello.com/c/iqhyMnMP

⚠️ This repo is Continuously Deployed: make sure you follow the guidance ⚠️

[huwd]

nice!
Non blocking but a thought, we're using instance variables here in a partial.
Do we / should we prefer to pass local variables here instead?

Pro: as instance variables are set in the controller, they'll fail if we ever try to include this partial into a view that's spun up by a different controller. So using local variables in partials allows us to make these truely re-usable between any view, and not locked to the implimentation in a controller. Perhaps especially as we've put this partial in _shared/ which implies it could be re-used broadly?

Con: It will make your lovely newly slimmed down calls in publication, detailed guide and consultation chunky again. 🤔

I'm not sure what the right thing is here, no what's blocking?
I wonder if there's a preference in the frontend community?

[huwd]

We caught up and discussed the pros / cons of locales, we decided because of this case sticking with what we've got is all cool.
Nice work.