#265 Basic python sorting of many iterations.  Still need correct handling for cumulative case.
Added Python mention in Readme.md
#265 WIP cumulative fields working, but boxplot crashes on non-cumulative fields
#265 Histogram basically working to summarize all 1,000 iterations
Changes to error messages for database operations. Error message will give more details on which operation failed.
#265 Histogram normalized and switches between new and cumulative modes.
#261 Line graphs with .05 alpha to mockup density plot
#261 First 2D Histogram
#261 Fixed histogram bin scaling.
#261 Working boxplot and colorbar for the hist2D scale
#261 Refactored the code so that the old line graphs are working again for single iterations.
#261 Fixed zone graph scaling by filtering by iteration.
Stable:  Closes #261 Cleaned up graphing code for non-ProductionType sections and graph presentation on the graphLinks page.
Fixed misleading Zone radius
Better graph names
* Don't list the model name
* mention "All Production Types" for iteration summary
* Mention Zone name for particular zones
Migration to close out #209 somehow got missed
Now Displaying new and cumulative graphs side by side in the Results details #147
#268 Added version number and raised Zone radius.
Closes #268.  Integrated Version model into parser, model, migration, and display under the Population Map.
Minor: re-fixing largest_zone_radius that somehow got reverted in 9f41d93b968da42631f155f3def11d1aac933134