Add This field is missing RU translation

<source>This field is missing.</source>
Have no translation. Not exists in EN version too. Just forgotten? 
Symfony\Component\Validator\Constraints\Collection()
public $missingFieldsMessage = 'This field is missing.';
merged branch fabpot/moved_validator_4 (PR #7784)

This PR was merged into the 2.1 branch.

Discussion
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Add This field is missing RU translation

This PR was submitted on the symfony/Validator read-only repository and moved automatically to the main Symfony repository (closes symfony/Validator#4).

<source>This field is missing.</source>
Have no translation. Not exists in EN version too. Just forgot? 
Symfony\Component\Validator\Constraints\Collection()
public $missingFieldsMessage = 'This field is missing.';

Commits
-------

97c4291 Add This field is missing RU translation
Re-added context information to log list

Fixes #7679
merged branch mweimerskirch/patch-16 (PR #7806)

This PR was submitted for the master branch but it was merged into the 2.2 branch instead (closes #7806).

Discussion
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[Profiler] Re-added context information to log list

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #7679
| License       | MIT

Commits
-------

55c2044 [Profiler] Re-added context information to log list
Added reloading of fallback catalogues when calling addResource() (#7715)

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #7715
| License       | MIT
| Doc PR        |
Reset all catalogues when adding resource to fallback locale (#7715, #7819)

Slightly refactored testAddResourceAfterTrans()
and replaced costly part with reset all catalogues

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #7715, #7819
| License       | MIT
| Doc PR        |
merged branch hilobok/ticket_7715 (PR #7819)

This PR was submitted for the master branch but it was merged into the 2.2 branch instead (closes #7819).

Discussion
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[Translator] Added reloading of fallback catalogues when calling addResource() (#7715)

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #7715
| License       | MIT
| Doc PR        |

Commits
-------

4f0b063 [Translator] Reset all catalogues when adding resource to fallback locale (#7715, #7819)
5544f36 [Translator] Added reloading of fallback catalogues when calling addResource() (#7715)
Rename misprint property (from warmer to finder)
merged branch alexpods/patch-1 (PR #7837)

This PR was submitted for the master branch but it was merged into the 2.1 branch instead (closes #7837).

Discussion
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Rename misprint property (from warmer to finder)

Commits
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a1f5bd5 Rename misprint property (from warmer to finder)
save auto-escaping of generated URLs when possible for performance reasons
Outsource all the BCrypt heavy lifting to a library
Fixed typo
merged branch jakzal/patch-1 (PR #7851)

This PR was merged into the master branch.

Discussion
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Fixed typo

Commits
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0600d83 Fixed typo
[Security] tweaked previous commit
[TwigBridge] added some unit test for the previous commit
merged branch fabpot/bcrypt (PR #7853)

This PR was merged into the master branch.

Discussion
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[Security] Outsource all the BCrypt heavy lifting to a library

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | yes
| Deprecations? | no
| Tests pass?   | yes
| License       | MIT

The [BCrypt bundle](https://github.com/elnur/ElnurBlowfishPasswordEncoderBundle) is already using the library.

This is a working implementation of #7247

Commits
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c83546d [Security] tweaked previous commit
b2e553a Outsource all the BCrypt heavy lifting to a library
[PropertyAccess] Made naming consistent with Form and Validator
merged branch fabpot/twig-url-escaping (PR #7850)

This PR was merged into the master branch.

Discussion
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[2.3] [TwigBridge] save auto-escaping of generated URLs when possible

| Q             | A
| ------------- | ---
| Bug fix?      | [no]
| New feature?  | [yes: optimization]
| BC breaks?    | [no]
| Deprecations? | [no]
| Tests pass?   | [yes]
| Fixed tickets | #7088
| License       | MIT
| Doc PR        | [-]

Determines at compile time whether the generated URL will be safe and thus
saving the unneeded automatic escaping for performance reasons.

The URL generation process percent encodes non-alphanumeric characters. So there is no risk
that malicious/invalid characters are part of the URL. The only character within an URL that
must be escaped in html is the ampersand ("&") which separates query params. So we cannot mark
the URL generation as always safe, but only when we are sure there won't be multiple query
params. This is the case when there are none or only one constant parameter given.
E.g. we know beforehand this will be safe:
- path('route')
- path('route', {'param': 'value'})

But the following may not:
- path('route', var)
- path('route', {'param': ['val1', 'val2'] }) // a sub-array
- path('route', {'param1': 'value1', 'param2': 'value2'})

If param1 and param2 reference placeholder in the route, it would still be safe. But we don't know.

Commits
-------

725568b [TwigBridge] added some unit test for the previous commit
0721ff8 save auto-escaping of generated URLs when possible for performance reasons
Revert "merged branch mvrhov/patch-1 (PR #4975)"

This reverts commit 407246a1da3b71ca548d00a51d1e5798b69feb8f, reversing
changes made to 3841d1c6d73eb9cc222867ac2bc047d6518d942e.
[Security] added more info about the BCrypt change (refs #7853)