Move function PP_EACH_USER and PP_EACH_EXTENSION documentation to XML.

Move function PP_EACH_USER and PP_EACH_EXTENSION documentation to the new
AstXML form.

(issue #15245)
Reported by: eliel
Patches:
      res_phoneprov_static_conversion.txt uploaded by lmadsen (license 10)
	(with PP_EACH_USER add by me)



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@199411 65c4cc65-6c06-0410-ace0-fbb531ad65f3