Updated 3.2.x link [ci skip]
Update I18n guide to note the additional features of the `translate` view helper
Update 3_2_release_notes.md

Code style adherence
Fixes typo
Update 4_0_release_notes.md

Code Highlighted
warning about saving models with dirty attributes

See #8328
Fixed URL link to rendered_component plugin [ci skip]
rephrase the overriding views part about the view path

See rails/rails#12608
fix typo introduced when searching in markdown document with vim
guides/rails_on_rack: Fix formatting of _Internal Middleware Stack_ section
Hstore and JSON fields are not supported with store

The use of `store` on Hstore fields (for instance) is not needed
because serialization aimed to interact with Ruby objects and not
with provided field types
exists? is deprecated in ruby trunk [ci skip]

see here 4d4ff531b8807ee88a3fc46875c7e76f613956fb
Fixed code syntax for config.ru [ci skip]
refine usage docs of `store` in combination with `hstore` and `json`.

refs #11561 #12700
Update Rails initialization guide to explain how bin/rails is executed
Merge pull request #12788 from kylefritz/patch-1

rdoc: favicon source shouldn't begin with a slash to reference asset pipeline resource [ci skip]
Conflicts:
	actionview/lib/action_view/helpers/asset_tag_helper.rb
Add +capitalize+ option to Inflector.humanize

So strings can be humanized without being capitalized:

    'employee_salary'.humanize                    # => "Employee salary"
    'employee_salary'.humanize(capitalize: false) # => "employee salary"
Merge pull request #12789 from claudiob/humanize-without-capitalizing

Add +capitalize+ option to Inflector.humanize
Extract method refactoring for Rails::Server#start
instance_variables returns symbols, so we should use symbols in our list