In research we’ve seen two problems with the click-to-see-PDF thing:
- it’s not very intuitive that the letter is clickable, or what you
can expect when clicking the letter
- people get lost of stuck in the PDF view because it opens in the same
tab, or they open it in a new tab and then get find their way back, or
…
So this commit changes the show template page to show the entire
contents of the letter, same as we do for emails and text messages.
Right now it only does it on the view template page. I think we’ll have
to work out a way of showing some kind of truncated version on the _Send
yourself a test_ and _Preview_ pages. But that’s for later.
while PDFs work on paas, they only do that because it turns out the
python buildpack happens to have imagemagick preinstalled - if that
ever changes then it'd break. so move those to the template preview
service. This also means we can get rid of weazyprint and wand
dependencies
