SimpleAppender doesn't need to keep EOI tuples
let numTuples() return 0 when null
Only send necessary tuples when using rejoin mode.
Duplicates, for example, are removed in update() and shouldn't be sent
ingest and import query strings should use the correct dbms
fix the problem of casting a MasterSubQuery to a WorkerSubQuery
rename rawDatalog to rawQuery for consistency.
Datalog is not the only possible raw query language.
rename json
missing ftMode for master plan
fix set opName
fix numTuples()
add a field called language to QueryEncoding.
It's optional and not set anywhere right now. Welcome to set it from myria-web :)
fixes regarding comments
Merge pull request #572 from uwescience/jwang_variousFixes

Jwang various fixes