Update reference/configuration/framework.rst

This PR is related to this one https://github.com/symfony/symfony/pull/5347.
Update reference/dic_tags.rst

Adding tags to the tag list reference
Update reference/configuration/framework.rst

Changing backticks
add cookbook entry on creating dynamic forms based on services
camelCase variable names
complete config for form as a service
consistent use of DemoBundle instead of 'WhateverBundle'
Update reference/configuration/framework.rst

The GetSetMethodNormalizer is not loaded by default
merged all dynamic form articles in one. Added a section on advanced form configuration
PHP5.3 syntax for arrays
Added a section on the BCrypt password encoder.
A cookbook article on how to test forms
Remove --dev, replace AbstractType by FormTypeInterface
Add missing semicolon
Added some xml formats
Fix the "doctrine file uploads" cookbook examples, see symfony/symfony-docs#600
cs fixes
more cs fixes
add missing space
end short descriptions in PHPdoc comment with a .