Exchanges columns organization

[algazarra]

Two suggestions:

1. Organizing exchange names vertically is better than horizontally.
2. More columns and less rows. Saving on vertical space, as this section is way too big.

[dllud]

1. We know. But it is difficult to do it with our current architecture and while maintaining a responsive layout. The ways to implement this would create us too much trouble.
2. If we had more columns exchange with long names such as "Digital Securities Exchange" will break into two lines, leaving an ugly vertical whitespace on all other exchanges in the same line.