lobsters/lobsters

Odd production exceptions this morning from story_params that @user was nil
when it checked @user.is_moderator. I think a user was scripting the story
submission form or cleared cookies after opening it. I'm deliberately not
adding the obvious nil check to story_params because non-users shouldn't be
submitting story data; I want the exception that the before_action is missing.

PR #533

Close #508

also fix deprecations:

```
To automatically update from static attributes to dynamic ones,
install rubocop-rspec and run:

rubocop \
  --require rubocop-rspec \
  --only FactoryBot/AttributeDefinedStatically \
  --auto-correct
```

Fixes #529

I can't see a reason for us to pin a specific version of this gem.

Closes #532

PR #526

Closes #523 and (hopefully) eliminates a chore for me.

…ryption

Part of the Rails 5.2 update. PR #516

PR #521

Close #524

The story_cache for Story i9u0aw has a line with 72 spaces. Subtracting that
from the line length of 72, that's 0, so the gsub regexp becomes /(.{1,0})/
and throws an exception.

Google's indexing of the site is very spotty, and this seems a lot easier than
improving our builtin search engine.

It's easy to miss up in the header.