remap_element_names(): Only used for things that the new conversion

remap_element_names():  Only used for things that the new conversion
		engine in latex2esis.py can do, so discard it.

paragraph detection & markup:  Handle some of the list-like
		environments properly, picking up paragraphs inside
		list items.  (Only changed a few element-sets used for
		recognition.)

fixup_refmodindexes_chunk():  Use the right attribute to determine the
		module a <ref*modindex/> element is referring to.

convert():  Don't call remap_element_names(); it was removed.