* origin/topic/dnthayer/doc-improvements:
Fix some scripting tutorial examples
Add some missing Bro script documentation
Fix more "make doc" warnings
Fix some "make doc" warnings
Improve documentation of the "for" statement
Add more documentation to sumstats framework scripts
Update traffic per core estimate in the cluster doc
Update documentation for DNS "Z" field
Improve documentation of Bro script statements
BIT-1520 #merged