Add dynamic heat map opacity based on number of sets completed
Add show method to exercise_history controller
Add div containers for abs element for heat map to show and index views.
Add show method to exercise histories controller
mergining
removes sprockets
merge conflicts js
added high charts
added style to highchart
Merge pull request #44 from red-spotted-newts-2014/heat_map_opacity

Added high chart js image to measure rest vs active