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
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 .
Update reference/configuration/framework.rst
Update reference/configuration/framework.rst
add some minor interpunction fixes for consistency
shorten dynamic forms article, don't explain what is already elsewhere in the book or cookbook
fix delete the old image before the move of new image because of the same name