This PR was merged into the 2.3 branch.

Discussion
----------

[book] controller ch review, part 2

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | all
| Fixed tickets | no

I moved subtitle "The ``Request`` as a Controller Argument" a little bit further down; since it is dealing with the ``Request`` object i think it fits with the subtitle "Managing the Session" since this also deals with the ``Request`` object.

Commits
-------

fdb7bc9 typo
b56bf19 controller ch review, part 2

Making minor tweaks after reading through the changes in those PR's

* 2.3: (24 commits)
  [#6365] Removing extra :
  Added minor clarification
  [#6360] Minor changes
  [#6349][#6351][#6352]
  Editing the Doctrine section to improve readability.
  Minor corrections
  Fixed typo
  Fix escaping of backtick inside double back-quotes
  Removed server:stop code block for 2.3
  Removed the PR table example (this is now included by GitHub template)
  Updated link to Translatable Extension
  [reference] [constraints] added missing colon character for Image constraint documentation in YAML format.
  Editing the Doctrine section to improve readability.
  Removed info about reducing visibility for private
  Updated link to Translatable Extension
  Editing the Doctrine section to improve readability.
  typo
  controller ch review, part 3
  typo
  controller ch review, part 2
  ...

* 2.7: (32 commits)
  Fixed wrong code examples for Isbn constraint
  unused use instructions
  Fix typo in SwitchUserListener file name
  Changed folder name to lowercase (best practises)
  [#6365] Removing extra :
  Add a note about enabling DebugBundle to use VarDumper inside Symfony
  Update introduction.rst
  Added minor clarification
  Changed folder name to lowercase (best practises)
  Fixed typo in path
  [#6360] Minor changes
  [#6349][#6351][#6352]
  Editing the Doctrine section to improve readability.
  Minor corrections
  Fixed typo
  Fix escaping of backtick inside double back-quotes
  Removed server:stop code block for 2.3
  Removed the PR table example (this is now included by GitHub template)
  Updated link to Translatable Extension
  [reference] [constraints] added missing colon character for Image constraint documentation in YAML format.
  ...

Conflicts:
	book/controller.rst

* 2.8: (37 commits)
  Fixed wrong code examples for Isbn constraint
  Calling the parent implementation is mandatory.
  unused use instructions
  Fix typo in SwitchUserListener file name
  Reworded the example about $deep param
  Changed folder name to lowercase (best practises)
  [#6365] Removing extra :
  Add a note about enabling DebugBundle to use VarDumper inside Symfony
  Update introduction.rst
  Added minor clarification
  Changed folder name to lowercase (best practises)
  Fixed typo in path
  [#6360] Minor changes
  [#6349][#6351][#6352]
  Update "bootstrap.php.cache" to "autoload.php"
  Editing the Doctrine section to improve readability.
  Minor corrections
  Fixed typo
  Fix escaping of backtick inside double back-quotes
  Made list of types more consistent
  ...

Conflicts:
	book/installation.rst
	book/testing.rst

* 3.0: (38 commits)
  Fixed wrong code examples for Isbn constraint
  Calling the parent implementation is mandatory.
  unused use instructions
  Fix typo in SwitchUserListener file name
  Reworded the example about $deep param
  Changed folder name to lowercase (best practises)
  [#6365] Removing extra :
  Add a note about enabling DebugBundle to use VarDumper inside Symfony
  Update introduction.rst
  Added minor clarification
  Changed folder name to lowercase (best practises)
  Fixed typo in path
  [#6360] Minor changes
  [#6349][#6351][#6352]
  Update "bootstrap.php.cache" to "autoload.php"
  Editing the Doctrine section to improve readability.
  Minor corrections
  Fixed typo
  Fix escaping of backtick inside double back-quotes
  Made list of types more consistent
  ...