[FrameworkBundle] The config:dump-reference command shows the list of bundles with the table helper
[HttpFoundation] Add a way to avoid the session be written at each request
[Templating] fix logic regarding template references and many phpdocs
minor #8927 [Templating] fix logic regarding template references and many phpdocs (Tobion)

This PR was squashed before being merged into the master branch (closes #8927).

Discussion
----------

[Templating] fix logic regarding template references and many phpdocs

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

this clarifies the expected types and exceptions by much. and it fixes some logic flaws.
- missing info/methods in interfaces
- respecting Twig_LoaderInterface only accepting strings, not objects

related to fabpot/Twig#1183 but does not depend on it

Commits
-------

f6c12bd [Templating] fix logic regarding template references and many phpdocs
[FrameworkBundle] adds routing/container descriptors
feature #7887 [FrameworkBundle] adds routing/container descriptors (jfsimon)

This PR was squashed before being merged into the master branch (closes #7887).

Discussion
----------

[FrameworkBundle] adds routing/container descriptors

The goal of this PR is to add descriptors (as in #7454) for routing and container. This will permit add a `--format` option to `router:debug` and `container:debug` commands (with `txt`, `json`, `xml` and `md` formats).

Commits
-------

22f9bc8 [FrameworkBundle] adds routing/container descriptors
minor #8487 [FrameworkBundle] The config:dump-reference command shows the list of bundles with the table helper (saro0h)

This PR was merged into the master branch.

Discussion
----------

[FrameworkBundle] The config:dump-reference command shows the list of bundles with the table helper

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no

Commits
-------

31c6c62 [FrameworkBundle] The config:dump-reference command shows the list of bundles with the table helper
fixed CS
[FrameworkBundle] updated XML route description
[FrameworkBundle] fixed container:debug and router:debug commands
[FrameworkBundle] changed the router:debug to use the shortcut notation for the controller
[FrameworkBundle] changed JSON descriptors to be more readable on PHP 5.4+
[FrameworkBundle] moved router:debug and container:debug to use the compact layout
bug #9197 [FrameworkBundle] updated XML route description (jfsimon)

This PR was merged into the master branch.

Discussion
----------

[FrameworkBundle] updated XML route description

This PR turns

```xml
<route name="route_1" path="/hello/{name}" class="Symfony\Component\Routing\Route" path_regex="#^/hello(?:/(?P&lt;name&gt;[a-z]+))?$#s">
```

into

```xml
<route name="route_1" class="Symfony\Component\Routing\Route">
    <path regex="#^/hello(?:/(?P&lt;name&gt;[a-z]+))?$#s">/hello/{name}</path>
```

in XML routing description.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | yes
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #7887
| License       | MIT
| Doc PR        | n/a

Commits
-------

7b99ede [FrameworkBundle] updated XML route description
[Console] fixed tests
skipped some tests on PHP 5.3
[FrameworkBundle] Adds the possibility to register Commands via the DIC
[Security\Csrf] Split CsrfTokenGenerator into CsrfTokenManager and TokenGenerator
bug #9216 [Security\Csrf] Split CsrfTokenGenerator into CsrfTokenManager and TokenGenerator (bschussek)

This PR was merged into the master branch.

Discussion
----------

[Security\Csrf] Split CsrfTokenGenerator into CsrfTokenManager and TokenGenerator

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #9210
| License       | MIT
| Doc PR        | -

This is a follow-up PR of #6554 that splits the CsrfTokenGenerator into two separate classes for generating and managing CSRF tokens. As a consequence, it is now possible to explicitly remove or refresh CSRF tokens if they should be used only once. See #9210 for more information.

Commits
-------

d4bb5f4 [Security\Csrf] Split CsrfTokenGenerator into CsrfTokenManager and TokenGenerator