Add Mallet's "logging.properties" file to get rid of the "Couldn't open <...>" warning

Conflicts:
	java/CrfUtils/pom.xml
Fix typo
Regenerate cpanfile.snapshot in an attempt to fix Vagrant automated install test
Make MediaWords::DBI::Downloads::fetch_preprocessed_content_lines() use the return value of MediaWords::Crawler::Extractor::preprocess() instead of trusting it to change the arrayref passed as a parameter; this is because HTML::CruftText::clearCruftText() no longer returns the same reference and thus the HTML wasn't being preprocessed; also, revert unit tests' expected results to their previous values
Update (regenerate) expected crawler unit test output to match the one that is provided by the slightly updated set of text overlap finder + HTML::CruftText (after the HTML::CruftText::clearCruftText() usage bugfix)
 Since this extractor model was based a bug in HTML::CruftText, go back to the original model.

Revert "Regenerate the extractor model."

This reverts commit 543516f41e98181cbaaa513f2121fa56a3718922.
Merge branch 'master' into api_v_2_0