Rename a few utility functions
Merge function rename from epubbase

Conflicts:
	sanitize.py
Rewrite quotify to eliminate ugly special-casing

Add an optional exclude argument to filter out note links or
similar when quotifying.
Merge quotify rewrite from epubbase
Exclude note links from quotify

The EPUB is identical to commit 66f4a52debfd2d1308c80d3c45c2c560c51a3986.