Clarify that route defaults don't need a placeholder
feature #4017 Clarify that route defaults don't need a placeholder (iamdto)

This PR was merged into the 2.3 branch.

Discussion
----------

Clarify that route defaults don't need a placeholder

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.3+
| Fixed tickets | #3960

Commits
-------

a18e5cc Clarify that route defaults don't need a placeholder
Merge branch '2.3' into 2.4

* 2.3:
  Clarify that route defaults don't need a placeholder
Merge branch '2.4' into 2.5

* 2.4:
  Clarify that route defaults don't need a placeholder
Merge branch '2.5'

* 2.5:
  Clarify that route defaults don't need a placeholder
[Twig][Form] Moved twig.form.resources to a higher level
feature #4003 [Twig][Form] Moved twig.form.resources to a higher level (stefanosala)

This PR was merged into the master branch.

Discussion
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[Twig][Form] Moved twig.form.resources to a higher level

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | no, https://github.com/symfony/symfony/pull/11343
| Applies to    | >= 2.6
| Fixed tickets | -

Commits
-------

63d8657 [Twig][Form] Moved twig.form.resources to a higher level
added Nicolas to the list of mergers for the new var dumper component
minor #4275 added Nicolas to the list of mergers for the new var dumper component (fabpot)

This PR was merged into the master branch.

Discussion
----------

added Nicolas to the list of mergers for the new var dumper component

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | no
| Applies to    | 2.6+
| Fixed tickets | n/a

Commits
-------

881f8d8 added Nicolas to the list of mergers for the new var dumper component
Clarifying some language
[Filesystem] Moved current document to a dedicated folder
[Filesystem] Added documentation for the new LockHandler