Switched to using SheetAsJSON backend in google sheets
Removed Tabletop dependency and added Pivottable dependency
Implemented Pivottable support incl. custom Highchart renderers
Fixed bug where AccountbalanceView was loading together with any other tab
New files to ignore
Removed useless views incl. AbstractChart view
Added Debug tab for browsers without developer console (e.g. iOS)
Commented out some useless code in Transactions
Added support for Type column in dataset
Bumped up several dependencies
Added adaptive width of charts in pivot table based on data to be shown
Fixed support of the new Type column
Added support for inverted charts (handy for expense-only charts)
Changed pivot chart renderer to use spline and areaspline
Added min-width to the whole body