[WCM] Skip console commands from event listeners

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | yes (symfony/symfony#9235)
| Applies to    | master
| Fixed tickets | none
[Translation] added method to expose collected message
intro the var-dumper component
review effect
Reduce line length
doc for Dumpers
split intro/advanced sections
use VarCloner instead of Php/ExtCloner
Reworded a misleading Doctrine explanation
move Dumper section above the Caster one
Fixed typo
[reference][configuration][security]Added key_length for pbkdf2 encoder
section for DebugBundle/Twig integration
§ about Data::getLimitedClone()
Removed the redundant usage of layer.

Since DBAL is database abstraction layer, and is defined in the document as such, to me it reads funny to have it as database abstraction layer layer. It sounds nitpicky, I know, but I find it an easier read this way. Also, the possessive DBAL stuck out ("DBAL's layer") as the DBAL doesn't own a layer, it is the layer.
Shorten the = to match the length of the text.
Removed the possession from Doctrine.
One more again. I could have sworn I had them lined up.
§ about DebugBundle config
minor adjustments