Some important little upgrades but mostly straightforward!
Note that there's still a known issue where item searches crash, I was hoping that this was a bug in Rails 4.2 that would be fixed on upgading to 5, but nope, oh well!
Also uhh I just got a bit silly and didn't actually mean to go all the way to 5.2 in one go, I had meant to start at 5.0… but tbh the 5.1 and 5.2 changes seem small, and this seems to be working, so. Yeah ok let's roll!
Some tricks required here to get the dependencies to work out, but we got it!!
Oh also, we move away from the rbenv in Ubuntu's package manager, because it doesn't support more recent Rubies like 2.4.10.
Idk exactly what's going on with dotenv-deployment, if it turns out it was critical to our deploy process then we'll change the deploy process! It's deprecated and conflicts with gem deps for `dotenv-rails`.
idk why we were pulling from git before, probably to get a feature that wasn't pushed to rubygems yet? But now the latest rubygems version matches the latest repo commit (both back in 2017 lol), so let's do that for greater stability and clarity!
I don't think these work anymore, and our volunteers get new items into the db fast anyway, Impress 2020 is doing better spidering these days. And then we get to remove the cron job `whenever` gem!
Yay, we've deleted all our background tasks!
We'll probably want to replace some of the basic functionality like certain caching? But we can deal with that as we run into it.
The direct motivation here was a seeming version conflict between Rails 4.2's rack dependency and latest Resque's rack dependency... but this is just nice complexity elimination regardless, we want this anyway :3
We've already swapped out the backend for this stuff to Impress 2020, so the resque task and the broken image report UI aren't actually relevant anymore. Delete them!
This helps us delete Resque soon too.
Rails 4 removed `attr_accessible`, and we should move away from it to (I think we'll need to by Rails 5?), but for now we can install this and move on!
We'll need to replace the item search query stuff with direct MySQL queries, but that's not ready yet bc the app still isn't booting, so we're committing this in a known broken state for now!
I haven't logged into newrelic in a billion years, let's just stop sending them stuff
(This is a precursor to an attempt to delete flex stuff too and replace our elasticsearch stuff with direct mysql queries like Impress 2020 does, but that'll be more work!)
NOTE: This doesn't boot yet! There's something changed in the `devise` API that we'll need to fix!
```
/vagrant/config/initializers/devise.rb:46:in `block in <top (required)>': undefined method `encryptor=' for Devise:Module (NoMethodError)
```
But yeah, we navigated the gem upgrades, and also I ran `rake rails:update` and hand-processed the suggestions it had for our config files.
I'm just giving the app a very quick scan on critical pages, it's possible I'm missing some issues on paths that are harder to test rn like openneo_id auth, but I'll check in on that later I think?
This commit will require a few changes to the deployment process:
* store AWS credentials in AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY env vars
* store OpenNeo Auth credentials in OPENNEO_AUTH_APP, OPENNEO_AUTH_SERVER, and OPENNEO_AUTH_SECRET env vars
STRIPE_SECRET_KEY and STRIPE_PUBLISHABLE_KEY are now required, too; better have a good .env.
You can always put in dummy values if you have no credentials, though; they only get called up if there's a transaction.
SECRET_TOKEN is now an env var, too, but the production deploy process currently replaces config/initializers/secret_token.rb anyway; this might be the way to go later, though.
