#249 - Improve reliability and logging of AJAX checking
#424 - Finalize the proto header channel processors and update documentation as a result. Allow the normal Spring security and load proto channel processors to coexist

(cherry picked from commit e31eba072716e16b4488c7c769a2b07de7c31575)
Merge branch 'BroadleafCommerce-3.0.x' into develop