Disallow abstract definitions from doctrine event listener registration
[Form][Validator] All index items after children are to be considered grand-children when resolving ViolationPath (fixes #11458)
[WebProfilerBundle] turbolinks compatibility
[WebProfilerBundle] Fixed double height of canvas
[Translation] made XliffFileDumper support CDATA sections.
return empty metadata collection if none do exist

The PropertyMetadataContainerInterface defines that the method
getPropertyMetadata() has to return an empty collection if no
metadata have been configured for the given property. Though, its
implementation in the ClassMetadata class didn't check for
existence of such metadata. This behavior led to unexpected PHP
notices when validating a property or a property value of a property
without any configured constraints (only affects the new 2.5 API).
Additionally, the getMemberMetadatas() didn't check for existing
array keys as well which has also been fixed.
[DomCrawler] fix the axes handling in a bc way

The previous fix in #11548 for handling XPath axes was not backward
compatible. In previous Symfony versions the Crawler handled nodes
by holding a "fake root node". This must be taken into account when
evaluating (relativizing) XPath expressions.
revert #11510, moved to 2.6
Made optimization deprecating modulus operator
[Validator] Backported constraint validator tests from 2.5
minor #11646 [Validator] Backported constraint validator tests from 2.5 (webmozart)

This PR was merged into the 2.3 branch.

Discussion
----------

[Validator] Backported constraint validator tests from 2.5

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

This PR backports the constraint validator tests from 2.5 to 2.3 to facilitate maintenance. When we adapt a test in 2.3, we can now easily merge the change forward to 2.5.

Commits
-------

87a47ea [Validator] Backported constraint validator tests from 2.5
bug #11529 [WebProfilerBundle] Fixed double height of canvas (hason)

This PR was merged into the 2.3 branch.

Discussion
----------

[WebProfilerBundle] Fixed double height of canvas

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #7065
| License       | MIT
| Doc PR        | -

Commits
-------

c689186 [WebProfilerBundle] Fixed double height of canvas
minor #11667 [HttpFoundation] revert #11510, moved to 2.6 (nicolas-grekas)

This PR was merged into the 2.3 branch.

Discussion
----------

[HttpFoundation] revert #11510, moved to 2.6

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | none
| License       | MIT
| Doc PR        | none

This reverts PR #11510 from 2.3.

Commits
-------

fb120c7 revert #11510, moved to 2.6
fix handling of nullable XML attributes

As @Tobion pointed out in #11394, true and 1 are valid values in
boolean XML attributes. The XmlFileLoader didn't handle 1 values
properly.
add missing options
minor #11674 [Validator] Add missing translation NL (1emming)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #11674).

Discussion
----------

[Validator] Add missing translation NL

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | part of #11489
| License       | MIT

Commits
-------

2d5ab91 add missing options
[YAML] resolve variables in inlined YAML
check for the correct field type

HTML allow to define different form fields with the same name.
Imagine the following form:

    <html>
        <body>
            <form action="/">
                <input type="hidden" name="option" value="default">
                <input type="radio" name="option" value="A">
                <input type="radio" name="option" value="B">
                <input type="hidden" name="settings[1]" value="0">
                <input type="checkbox" name="settings[1]" value="1" id="setting-1">
                <button>klickme</button>
            </form>
        </body>
    </html>

Since the `FormFieldRegistry` can only handle one field per name, the
hidden field option is registered first before the radio field with
the same name is evaluated. Thus, the `FormFieldRegistry` returns an
`InputFormField` instance on which the `addChoices()` method can not
be called.
minor #11615 [Validator] return empty metadata collection if none do exist (xabbuh)

This PR was merged into the 2.3 branch.

Discussion
----------

[Validator] return empty metadata collection if none do exist

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        | [The reference to the documentation PR if any]

Backport of #11614 for Symfony 2.3 and 2.4.

Commits
-------

f5bc18d return empty metadata collection if none do exist
[Validators] Fixed failing tests requiring ICU 52.1 which are skipped otherwise