Fix MaxTotal calculation.
New BarChart implementation which uses GPU better for animations.
Add overlay messages to BarChart.
Tweak bar chart data animation timings.
Adjust BarChart labels for displaying many rows.
Merge pull request #431 from toggl/roosmaa-lagless-anims

Rewrote BarChart for speed. Closes #414.

Conflicts:
	Joey/Joey.csproj