Collection of minor fixes: Typos, formatting, improvements
Merge branch 'collection_of_minor_fixes' of github.com:bicpi/symfony-docs into bicpi-collection_of_minor_fixes

Conflicts:
	book/translation.rst
	cookbook/assetic/uglifyjs.rst
	cookbook/bundles/remove.rst
	cookbook/form/form_customization.rst
Merge branch '2.2' into 2.3

Conflicts:
	reference/configuration/framework.rst
	reference/twig_reference.rst
[#3188] Fixing a bad merge at sha: ba770f2eb8d42ce525b9c85bf25356cd4b4994db
Merge branch '2.2' into 2.3
Merge branch '2.3' into 2.4

Conflicts:
	book/translation.rst
	cookbook/configuration/pdo_session_storage.rst