fix typo and move reference to the appropriate file
Update unit_testing.rst

Forget line addExtensions() in example. This line is in FormIntegrationTestCase class. If you don't add this you'll not be able to load additionnal FormType.
Update varnish.rst

fixed missing semicolon
Create block_name.rst.inc
Add block_name entry to the list of form options
Update block_name.rst.inc
[#3008] Minor tweaks to block_name docs
Merge pull request #3028 from xabbuh/date-format-fixes

fix typo and move reference to the appropriate file
Update hidden.rst

typo in label link for inherited options type.
[#3010] Fixing more instances of using the wrong label in some links in form reference section
Merge branch '2.2' into 2.3

Conflicts:
	reference/forms/types/form.rst