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'
merged all dynamic form articles in one. Added a section on advanced form configuration
PHP5.3 syntax for arrays
shorten dynamic forms article, don't explain what is already elsewhere in the book or cookbook
Merge branch 'khepin-dynamic_forms' into 2.1

Conflicts:
	cookbook/form/dynamic_form_modification.rst