"- Or - Select tracks to delegate" to just be one column, mobile, limit container width

[rossbulat]

2 easy things here that will immediately make the dashboard mobile friendly:

• Move from 4 columns to 1 column for this section and we will immediately be mobile friendly. We can then explore better ways to move between and filter tracks.
• Limit the maximum width of the app to 1450px (same as staking dashboard) and center the app container. It is currently full-width on the landing, and centered on a delegate info page, which is not consistent.

Multi column for tracks is a no no here because it limits multiple form factors, it limits space of the cards, and ultimately codes ourselves into a dead end. What would be easier to work with is having multi-column for the track items, not the track itself. This would look similar to how the dashboard displays nominations on the Nominate or Pools page, repeated for each track.