Add a cookie after dismissing the newsletter popup on the site

[nickchomey]

This popup keeps coming on every page, no matter how many times I dismiss it on other pages. It is very off-putting.

I suggest that you add cookie so that it doesn't show up after it has been dismissed once.

[pubkey]

We already use localstorage to remember that it was closed for 10 minutes.

[nickchomey]

Respectfully, that's not really an appropriate way to do this. Once I dismiss it, I should never see it again. Again, it is VERY off-putting - I would not be surprised if some people just write RxDB off completely after getting accosted by the popup a few times.

Looking at the code, I now see that there's 6 different notifications that get randomly chosen. I think it would be better to just put them all in a single floating sidebar widget or something. Perhaps upon each page load, a random one gets selected.