Chart Grid Layout

[ivanproskuryakov]

Hi, I wan't to propose an alternative layout to render simplified charts in grid format, which might be very convenient in analysis.
Depending on the screen size greed layout can have two or more charts - say 2x1(mobile) and 2x2, 3x3, 4x4, 5x5 for larger screens.

The demo of my proposal can be seen in the PR - #1092
Curious to hear some feedback.