Added IS_AJAX constant, can possibly be cleaned up since I set a variable and unset one before define the constant.
Added IS_AJAX constant, can possibly be cleaned up since I set a variable and unset one before define the constant.

PeterRock/Ci-Bonfire3,kelaskakap/cms-api-unggun,kelaskakap/cms-api-unggun,kelaskakap/cms-api-unggun,PeterRock/Ci-Bonfire3,PeterRock/Ci-Bonfire3