Replaced the priority paragraph with a note and a table
Fixed title underline
Updated title for the core cache warmers
Fixed title level consistency
feature #3719 Fixed event listeners priority (tony-co)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #3719).

Discussion
----------

Fixed event listeners priority

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

Commits
-------

47d4d4f Fixed title level consistency
1dbfd29 Updated title for the core cache warmers
a9d07a5 Fixed title underline
815f531 Replaced the priority paragraph with a note and a table
db2c002 Fixed event listeners priority (typos after review)
13b5645 Fixed event listeners priority
add serializer set callback documentation
plug new revision
add comma madness and lowercasing W
feature #3701 [Serializer] add documentation for serializer callbacks (cordoval)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #3701).

Discussion
----------

[Serializer] add documentation for serializer callbacks

related https://github.com/symfony/symfony/issues/10229

| Q             | A                   |
| ---           | ---                 |
| Doc fix?      | no                  |
| New docs?     | yes                 |
| Applies to    | 2.3+                |
| Fixed tickets | self :baby:      |
| License       | CC-ASA 3.0 Unported |

 Sent using [Gush](https://github.com/gushphp/gush)

Commits
-------

b865b40 add comma madness and lowercasing W
efe2029 plug new revision
eabdbd0 add serializer set callback documentation
minor #3695 Firewall backport (weaverryan)

This PR was merged into the 2.4 branch.

Discussion
----------

Firewall backport

This backports the changes from #3681 with the 2.4-only changes.

After this is merged, we'll need to merge this into master (like normal). At that time, the 2.5-specific changes from the `firewall_restriction` and firewall configuration need to be added back.

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.4
| Fixed tickets | n/a

Thanks!

Commits
-------

be46c76 After backporting something from master (2.5), removing the 2.5-specific features
9889dbe Enhanced Firewall Restrictions docs
Merge branch '2.3' into 2.4
Merge branch '2.4'

Conflicts:
	book/security.rst
	cookbook/security/firewall_restriction.rst
	cookbook/security/host_restriction.rst
Fix Image constraint class and validator link

Change Image constraint links from File and FileValidator to Image and ImageValidator.
bug #3747 Fix Image constraint class and validator link (weaverryan)

This PR was merged into the 2.3 branch.

Discussion
----------

Fix Image constraint class and validator link

Just a rebase of #3646...

Commits
-------

2a3955b Fix Image constraint class and validator link
[Templating] Add documentation about generating versioned URLs
fix literal
ignore more files and directories which are created when building the documentation
[Form] Deprecated max_length and pattern options
add missing toctree entry for the firewall restriction article
Fixed a typo