* Prepare Mastodon for zeitwerk autoloader (Rails 6)
Add inflections and rename/move a few classes.
In particular, app/lib/exceptions.rb and app/lib/sanitize_config.rb
were manually loaded while still in autoload paths.
* Add inflection for Url → URL
Conflicts:
- `Gemfile`:
We updated httplog in a separate commit.
Took upstream's change which updated it further.
- `Gemfile.lock`:
We updated httplog in a separate commit.
Took upstream's change which updated it further.
- `app/lib/sanitize_config.rb`:
Upstream added better unsupported link stripping,
while we had different sanitizing configs.
Took only upstream's link stripping code.
- `config/locales/simple_form.pl.yml`:
Strings unused in glitch-soc had been removed from
glitch-soc, reintroduced them even if they are not
useful, to reduce the risk of later merge conflicts.
