Enable documentation by default
Allow apps to be disabled with AppConfig keys
Add Windows pathname issue to README; tweak startup warning re: Derby
Added a short guide for running under Tomcat
Note that Nginx's config file might be in a different spot on some distributions.
Indexer changes to reduce memory footprint and improve performance

These include:

  * Store batches of documents on the filesystem before sending to Solr

  * Don't send both 'fullrecord' and 'json'.  Use a Solr copyField to derive
    one from the other.

  * Convert data cleanup functions to use in-place string functions.

  * Use multiple indexing threads