Modifying spatio-temporal plugin to properly output multiblock temporal statistics filter.

For the spatio-temporal script creator plugin, we replace the timecompartmentsize
value set in the gui for the filter with the timecompartmentsize value
set in the exporter wizard so that when the script is run that the filter
gets the proper time compartment size.
Merge pull request #9 from aashish24/temporalstatistics_generator_script

Modifying spatio-temporal plugin to properly output multiblock temporal ...