Removed outdated translations from the official list
Added custom format page to translation component
Link from introduction section
Small fixes
Cleanups
Fixed version for composer install
Improvements based on comments
Extra improvements based on comments
Fixed wrong indentation
fixes environment/application mistake
Improved custom formats article based on comments
Added note about exporting SYMFONY_ENV
New service to simplify password encoding
Route description correction.

The actual route is '/random/{limit}' and not '/number/{limit}'.
add link to form testing chapter in test section
feature #3995 [DX] New service to simplify password encoding (aferrandini)

This PR was merged into the master branch.

Discussion
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[DX] New service to simplify password encoding

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | [#11306](https://github.com/symfony/symfony/pull/11306)
| Applies to    | 2.6

Add documentation for symfony/symfony PR [#11306](https://github.com/symfony/symfony/pull/11306)

New service to simplify password encoding.

Commits
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785827f New service to simplify password encoding
Link to FOSHttpCacheBundle
feature #4175 Link to FOSHttpCacheBundle (ddeboer)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #4175).

Discussion
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Link to FOSHttpCacheBundle

* Link to FOSHttpCacheBundle that can help with cache invalidation.
* Qualify the strong negative opinion about cache invalidation, which we also find in the [Cache Invalidation section](http://symfony.com/doc/current/book/http_cache.html#http-cache-invalidation) in the docs. The cookbook (and docs) are too opiniated on this subject and offer no balanced view. We should not forget that [RFC 2616](http://tools.ietf.org/html/rfc2616#section-13.10) considers invalidation seriously. I would love to hear from the original  authors of this doc section or any others what their arguments against invalidation are. Let’s try to introduce both benefits and drawbacks more carefully in the docs (e.g., as is done [here](http://foshttpcache.readthedocs.org/en/latest/invalidation-introduction.html)).

Commits
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9243612 Link to FOSHttpCacheBundle
minor #4178 [Cookbook][Configuration] fixes environment/application mistake (dyferencjal)

This PR was merged into the 2.3 branch.

Discussion
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[Cookbook][Configuration] fixes environment/application mistake

IMO enviroment isn't properly used here. It should be application.

Commits
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6ab9c16 fixes environment/application mistake
bug #4184 [Page Creation] Route description correction. (ohvitorino)

This PR was merged into the master branch.

Discussion
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[Page Creation] Route description correction.

The actual route is '/random/{limit}' and not '/number/{limit}'.

Commits
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0a45113 Route description correction.