Fixed typo [ci skip]

singular is more suited to
change to "check out"
e-mail => email, and subject/verb agreement
add punctuation
Remove duplicate configuration option for ActiveSupport [ci skip]

Fixes rails/rails#13732
`requies` => `requires`
`easiy` => `easy`
`framwork` => `framework`
Remove old comments about suppressing warnings.
Upgraded jquery-rails gem version
Fixed spelling error: `extracetd` => `extracted`
Require action_view to fix missing constant

Previously, requiring action_view/view_paths did cause an uninitialized
constant error for ENCODING_FLAG, which is defined in action_view.
[Testing Guide] Mention :unauthorized in assert_response explanation [ci skip]
Merge pull request #13967 from fphilipe/fix-missing-action-view-const

Require action_view to fix missing constant ENCODING_FLAG
Merge pull request #13952 from prathamesh-sonpatki/testing

[Testing Guide] Mention :unauthorized in assert_response explanation [ci skip]
Adjust test value so that timezone has no effect

If the test is run in a timezone that is behind UTC it fails because
the time generated is ahead of 0000-01-01 00:00:00. Just increase the
time subtracted so that timezone has no effect.
docs, Cookie values are String based. Closes #12860. [ci skip]
Rely on backticks instead of tt tags [ci skip]

Since the language in code blocks is inferred, if the code contains tt
tags, the block will be parsed as XML for instance while it is Ruby.
context in validation goes through has many relationship
Updated the cookie docs to use the safer JSON.{generate,parse}

cc @senny