Added support for arbitrary attributes
Fixed various issues with data import:
	1. Returns are now allowed in mapping option values; this is useful if you want to embed a newline in a formatting template, for instance
	2. Template references to XML tags that include a slash character now work
	3. Refinery names were case sensitive, which was too easy to flub. They are now case insensitive in mappings. (They're still actually case-sensitive in code though; the mapping parser just corrects for case now)
Added missing options param