Styling for Schedule A and B data tables

[jmcarp]

Data tables for Schedules A and B are implemented in #302 but need styling work before they can be released, especially for the detail sidebar (which is currently still a modal).

[noahmanger]

Here's a view at the detail sidebar:

[noahmanger]

So starting with a full table like this:

Hovering over a row highlights it blue

Clicking anywhere other than the link to the committee name then converts it to a two panel layout, similar to how a two-panel email app works (like Mail on iPad).

In this view you just see the three left-most columns of the table. Clicking "Close" in the upper right closes the right panel and returns to a full table view. Clicking on any other row pulls up that preview.

[noahmanger]

And then on mobile, sticking with the Mail app paradigm, you just this view at first:

And clicking on a row switch the whole thing to the details pane, with the option to go back: