Cont3xt - Keyboard shortcuts

Improve upon the current keyboard shortcuts in Cont3xt.

This relies on completion of #2125.

• Each section could be assigned a number.
• Within each section the user should be able to use arrow keys to navigate.
• For indicator results:
  • down arrows go to each indicator (requires #2121)
  • Right arrow expands and traverse into nested indicator results
  • Left arrow collapses nested indicator results
• For integration results:
  • arrow keys select the integration to display
  • ? how do we drill down into results?