Escape feed content with Builder rather than by hand

Builder escapes by default; the three feed templates no longer call
CGI.escapeHTML. This fixes two sites that never escaped at all: the tag
feed's externally supplied :tag segment, interpolated into its title, self
link and id, and dc:creator in the RDF template.

Subscribers see one difference: quotes and apostrophes arrive raw, which is
valid in element text.

config/initializers/xmlparser.rb, which redefined Builder::XmlBase#_escape
as the identity function, is gone. XML::Node#replace_with went with it, no
callers.

0 files changed, 0 insertions, 0 deletions