Added impact slider, fixed chart header, replace <br> with polymer layout tags
Added impact slider, fixed chart header, replace <br> with polymer layout tags, comment debug log
Added polymer layout attributes to better display charts on different display sizes (no mobile yet)
Added polymer layout attributes to better display charts on different display sizes (no mobile yet), add impact column to activity table
Merge remote-tracking branch 'maiera/feature/material_design' into feature/material_design

Conflicts:
	js/GdeTrackingApp.js