More info in index repair validator error messages
Add slf4j log statements around type state changes
Reduce log volume from CassandraTransaction

It now logs its read and write consistency levels on construction
instead of every time it carries out an I/O operation
Customize CassandraTransaction toString
Reword some debug logging statements
Push some DEBUG logging msgs down to TRACE
Reindex documentation updates
Push sleep duration log messages down to TRACE
Fix admonition block tag in reindex docs
Reformat wide code blocks in reindex.txt

This reformatting should avoid horizontal scrollbars on most displays