… with the new documentation standardsSpecifically, I'm pretending as if 2.1 had reached its end-of-life today, and am applying all the needed changes to the master branch

Update master for new documentation standards

[WCM] Documented ProgressHelper's clear() method.

…s been deprecated - see documentation release directions)

…eed an extension that helps us manage this version stuff

Conflicts:book/security.rst

…k on the 2.2 branch

adds docs for idle timeout (seesymfony/symfony#8651)

[WCM] Updated documentation for PRsymfony/symfony#849...

…urity-id[WCM][Security][Acl] Documentation for the new updateUserSecurityIdentity method in Dbal\MutableAclProvider

Conflicts:reference/forms/types/integer.rstreference/forms/types/number.rst

Conflicts:cookbook/form/dynamic_form_modification.rst

Conflicts:book/security.rst

* Tweaked language in the components section to be more useful for component people* Added versionadded* Tweaked description of how this feature works

[Form] added multiple option to file type doc

…iner::enterScope()

Conflicts:book/http_cache.rst

* 2.3:  use html+jinja instead of html+twig

* 2.4:  use html+jinja instead of html+twig

The doctrine docs already has a big great documentation on this. There isno reason to duplicate it in the sf docs. This commit removes everythingexcept a simple example.It also moves the sentence about the return result above, since that makesmore sense now the getSingleResult example is removed.

The list is also included in the doctrine docs. There is no need toduplicate that in the sf docs. And if it's usefull, it certainly isn'twhen there is no more documentation about their meaning.

It's enough to add it to the "Read more" list, there is no need tointroduce each cookbook article in a seperate section.

This is really doctrine specific, the sf docs should not document this,kind of SoC for docs 😉.

It's not really basic information. All important commands are alreadydiscussed in the rest of the chapter. The rest are just usefull commands,which is a perfect topic for a cookbook.