Rewrap text
Improve text of indexing error message

Per #416.
Log messages, don't throw exceptions

Per #416
Don't have Solr try to index bad XML

Use our Tidy-created blacklist of bad XML files to avoid having Solr
try and fail to index invalid XML. Per #319.
Provide a test path for XSLT

Per #416.
Fix how we generate the file path

Per #416.
Tweak cURL settings

Fix a couple of minor bugs. Per #416.