[TwigBridge] Added form_twitter_bootstrap_layout.html.twig
fix RegisterListenersPass test

With #12088 being merged, the test needs to be adapted to reflect the
2.5 specific changes.
minor #12093 [EventDispatcher] fix RegisterListenersPass test (xabbuh)

This PR was merged into the 2.5 branch.

Discussion
----------

[EventDispatcher] fix RegisterListenersPass test

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

With #12088 being merged, the test needs to be adapted to reflect the 2.5 specific changes.

Commits
-------

9d2120b fix RegisterListenersPass test
[FrameworkBundle] enable ErrorHandler in prod
[Debug] make screaming configurable
[FrameworkBundle] register ErrorHandler at boot time
Display a nice upload limit message
feature #12081 [FrameworkBundle] enable ErrorHandler in prod (nicolas-grekas)

This PR was merged into the 2.6-dev branch.

Discussion
----------

[FrameworkBundle] enable ErrorHandler in prod

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #11053, #8281
| License       | MIT
| Doc PR        | -

-  a new debug.error_handler service is the registered PHP error handler, with ErrorHandler::register() as factory
- ErrorHandler::register() is patched so that it checks if the currently registered error handler is an instance of ErrorHandler - in which case it returns this instance and don't create a new one.
- DebugHandlersListener now listen to ConsoleEvents and re-injects fatal errors within the $app->renderException code path
- DebugHandlersListener also has a new $scream parameter to control is silenced errors are logged or not

Commits
-------

fac3cc4 [FrameworkBundle] register ErrorHandler at boot time
4acf5d3 [Debug] make screaming configurable
4d0ab7d [FrameworkBundle] enable ErrorHandler in prod
[WebProfilerBundle] Showed all ajax calls in toolbar
[DebugBundle] Removed unnecessary div in toolbar
[VarDumper] Added unique id for every single dump in html
minor #12109 [VarDumper] Improved dump in html (hason)

This PR was merged into the 2.6-dev branch.

Discussion
----------

[VarDumper] Improved dump in html

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | http://www.w3.org/TR/html5/dom.html#the-id-attribute
| License       | MIT
| Doc PR        | -

Commits
-------

f214eda [VarDumper] Added unique id for every single dump in html
minor #12113 [WebProfileBundle], [DebugBundle] Fixed big data in toolbar (hason)

This PR was merged into the 2.6-dev branch.

Discussion
----------

[WebProfileBundle], [DebugBundle] Fixed big data in toolbar

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

| Before | After
| --------- | -------
| ![prev-01](https://cloud.githubusercontent.com/assets/288535/4505427/72bd9d08-4af4-11e4-9aed-be4f868c3dfd.png) | ![post-01](https://cloud.githubusercontent.com/assets/288535/4505432/82583746-4af4-11e4-8052-658d4853cfb4.png)
| ![prev-02](https://cloud.githubusercontent.com/assets/288535/4505426/72bd9bb4-4af4-11e4-88ad-1949b6201684.png) | ![post-02](https://cloud.githubusercontent.com/assets/288535/4505431/824fb85a-4af4-11e4-88f5-5e01f907c580.png)

Commits
-------

febe836 [DebugBundle] Removed unnecessary div in toolbar
513d2d3 [WebProfilerBundle] Showed all ajax calls in toolbar
tests for the TranslatorListener
[VarDumper] encode non-ASCII UTF-8 chars as HTML numeric entities
Merge branch '2.5'

* 2.5:
  fix RegisterListenersPass test
minor #12116 [VarDumper] encode non-ASCII UTF-8 chars as HTML numeric entities (nicolas-grekas)

This PR was merged into the 2.6-dev branch.

Discussion
----------

[VarDumper] encode non-ASCII UTF-8 chars as HTML numeric entities

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

Commits
-------

e383a38 [VarDumper] encode non-ASCII UTF-8 chars as HTML numeric entities
feature #12103 [Validator] Display a nice upload limit message (Jérémy Derussé)

This PR was merged into the 2.6-dev branch.

Discussion
----------

[Validator] Display a nice upload limit message

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

Actualy when a user upload a file who exceed the upload limit, the error messag looks like `The file is too large. Allowed maximum size is 2097152 bytes.` which is not very readable.
This PR use the same method who generate the `maxSize` error message by gessing the smallest possible number.
The error message became `The file is too large. Allowed maximum size is 2 MiB.`

Commits
-------

b6e29e9 Display a nice upload limit message
minor #12117 tests for the TranslatorListener (xabbuh)

This PR was merged into the 2.6-dev branch.

Discussion
----------

tests for the TranslatorListener

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

Commits
-------

26b619b tests for the TranslatorListener
fixed composer.json