Fixed rows filter to check for actual amount when catching a ValueError on budget
Implemented correct state switch between nodes picker and chart panes
Fixed  x axis as time scale with proper yearly ticks;
Fixed y axis ticks
Fixed chart layout;
Fixed updating of chart according to data;
Fixed index setting and updating of legen item models
Fixed axis styling
Fixed updating of current timeline models
Fixed layout of chart with padding;
Added a layered mixin to chart and nodes_picket for handling states