Fix #1848 (bookmark tooltips)

[cndouglas]

• 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.

Adds a tooltip that shows the bookmark's title and URL.

Fixes #1848 (URL tooltip for items on bookmarks toolbar).

[cndouglas]

My sincere apologies for the mess. I am definitely a Javascript and git/GitHub noob.

[bsclifton]

The newline in here isn't working (at least on Windows)

I wonder if there's a better way to do it. But regardless, this will be a cool change 😄

[cndouglas]

Maybe \r\n should be used instead.

[bsclifton]

\n works great 😄

title={this.isFolder ? '' : this.props.bookmark.get('title') + '\n' + this.props.bookmark.get('location')}

Can you try changing it to that on your platform? If it looks good, please commit and we can merge

[cndouglas]

The pull request has been updated to use \n. (yay, I finally figured out how to squash commits!)

[bsclifton]

Looks great, thanks again! 😄

[bbondy]

++