Changing donation histogram to animate between number of donations and value of donations.  TODO: states drilldown
Making states drilldown table show the different measures
Tweaking state drilldown header format
Fixing blank state labels
Adding a scrollspy to the initial load of the histogram
Changing bin labels to show upper limit of bin, not lower limit
Adding loading indicator
Incorporating latest css tweaks to multi-measure layout
Fixing scrollspy bug where it wasn't always locking onto the right item
Merge pull request #112 from MayOneUS/histogram_multimeasure2

Donation histogram: show count of donations AND value of donations