added legend, static y axis, stacked bars for principle v. interest.
Revised to include stacked bars and legend. Month labels rotated

Todo: updating.
barBox for savings graph, updated slider tooltips for savings
last commit before branching
labeled lines, spaced out stacked bars
Cleaning up, de-krufting, commenting
removed month labels, bars get too small.
cleaning up, adding update-ability
Making car graph play nice
unified some styles
Merge branch 'divided-graphs'
moved inflation warning