Add an option to view multiple traces from open search in a table

[sarahzinger]

Dependent on #105 and to some degree #106 as well.

Once we can view one trace in detail we'll also want to see all traces for a given time, formatted as a table, with clickable trace ids. See similar example in X-Ray plugin:

(when we click the left ids in blue, the right trace tab opens)

This will likely require:

• adding a "Trace List" option to the query editor
• hooking up that trace list button so that it will select all traces for the selected time frame, see this doc for previous investigations of it https://docs.google.com/document/d/1l8HYKvCddF9jUdkAV0TkHU6fsWFs8T1s-gLWbaGLtog/edit
• formatting that response as a table
• ensuring that we have deep links to the individual traces (see X-Ray plugin for how to do this) Moving this to it's own ticket: Make TraceIds in Trace List View Clickable and link out to individual trace views #123