Wiki Publisher: publish thru the MediaWiki API; drop Tomcat, commons-httpclient and commons-codec since no longer needed

Scraping index.php no longer worked with current MediaWiki, and failed saves

Wiki Publisher: publish thru the MediaWiki API; drop Tomcat, commons-httpclient and commons-codec since no longer needed

Scraping index.php no longer worked with current MediaWiki, and failed saves were reported as
success. Tomcat was only built for commons-logging's servlet class.

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