Show history on long click over back button

[bsclifton]

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Ran git rebase -i to squash commits if needed.

Shows context menu when click-and-hold over back button. Works great, except it'll continue to propagate the click (opening this PR while I figure that part out- help is appreciated)

Will fix #1622 (although, it doesn't match the wireframe yet)

[bbondy]

Looking good but still needs some things before we can merge it in:

• We should show titles instead of URLs, it would be ideal to get it from electron if available there, but if not you can use the app state's sites.
• Pls also add favicons to the left of the items.
• The amount of time you have to hold is too long currently. See chrome/firefox for a comparison.
• Pls also do the same type of thing for the forward button.

[bsclifton]

Awesome feedback- I'll be doing my best to get it matching the mockup provided by @bradleyrichter

Would it make sense to encapsulate the back/foward buttons as a React component? It could help keep main.js clean and would encapsulate the event handlers too

[bbondy]

Yep, in general, the more smaller react components the better.

[bsclifton]

Going to close this PR for the moment while I implement the feedback. Thanks, folks 😄