Switch from CSS flexbox to Gridster.js for widget layout.
Visual refinements to "Sales" bar chart.
Fix existing item recognition in "Code" widget.
Fix repeated inserts of "Code" team notices.
Refine type sizing.
Bar chart: add y-labels to bars; refine type & layout.
Merge pull request #2 from substantial/feature/visual-design-v2

Feature/visual design v2