This applies
https://github.com/simplepie/simplepie/commit/16160017bf904538c3fe4cacadc1aba19d445106
to properly handle a missing DOMDocument extention. DOMDocument is still
needed to properly parse RSS feeds, but the process will no longer fail
fatally.

not a quoted string

The used boundary should have been correct but might throw off MTAs not
expecting more than two dashes at the start. This is just a wild guess
and may not fix anything (but shouldn't break anything either).

Fixes FS#2837

Remove extraneous slash. This extra slash was preventing the file being displayed by DokuWiki. (apologies for the two pulls instead of one)

Remove extraneous slash

Previously only the path for the configured template was returned and
the parameter was ignored.

Removed extraneous whitespace to eliminate errors reported by the
Squiz.WhiteSpace.SuperfluousWhitespace sniff.