Added results selection buttons and tweaked summary table.
Started to add heat map visualizations.
Got heatmaps working. Still needs options tweaked.
Continued to work on heatmap settings.
Merged chnages from master and fixed conflicts.
fixed typo in studies.css.scss
refactored the heatmap code: moved into models
Moved study analysis actions into controller and broke views into partials.
Merged branch master