Merge pull request #9529 from wangjohn/find_on_inverse_of_bugfix_9470

Find() on an association with an inverse will now scan existing in-memory records
Update documentation for Where chained modifiers.

where.like and where.not_like were removed in 8d02afeaee, but the
guide was not updated.
Fix guides error on error class name

The error that's raised in case the required key is missing it's actually `ActionController::ParameterMissing` not `ActionController::MissingParameter`. It's important to fix so that people reading the guides knows what error to rescue from when needed.
Merge pull request #9816 from sebasoga/strong_parameters_guide_fix

Fix guides error on error class name
Remove mentions of "app" from http request docs [ci skip]
Merge pull request #9794 from schneems/schneems/email-host

Fix improperly configured host in generated urls
Changed the call to .sort.last to .max when computing the migration version. You
do not actually need to sort everything (incurs more cost than just a
simple max).
Commas aren't comas.

Type a fixo.
Merge pull request #9817 from knewter/fix-test-case-name-typo-in-ar

Commas aren't comas.
Merge pull request #9818 from wangjohn/sort_last_to_max_in_migration_version

Changed the call to .sort.last to .max when computing the migration version
Raise an ArgumentError when a clashing named route is defined
Fix some typos in AR- CHANGELOG, tests, method doc. fixed
Fix broken ActionController#action_missing

A recent change introduced the assumption that all controller actions
are known beforehand, which is not true when using action_missing.
Fix a typo
Merge pull request #9825 from rShetty/patch-1

Fix a typo
Merge pull request #9821 from vipulnsward/fix_typos_in_AR

Fix some typos in AR- CHANGELOG, tests, method doc. fixed
Properly named variable inside block

Closes #9824.
Removed unnecessary block
Merge pull request #9833 from choudhuryanupam/fix_active_schema_test

Removed unnecessary block
Tweak exception message to avoid giving potentially misleading suggestions