Whitespace
Whitespace; deletion of commented/unreachable code
Call QueryToolController, not i2b2 (run query)

Some small changes in I2b2HelperService were required in order for the
summary statistics to work correctly. Namely, I2b2HelperService tried to
access the panel_number element, but our queries do not set such an
element.
Whitespace
Call QueryToolController (get query from def)

Instead of using i2b2 via the proxy