When metadata is set to "title", the titles are unreadable

[juanpaco]

From @cojoco:

Another smaller problem is that, when 'Metadata' is set to 'Title', the titles are unreadable at the bottom of the graph. It appears to try to cram the entirety of the text into a really small space. There has to be a better way to show this.

Split this out of #72.

@cojoco - can you include a screenshot of what you're seeing?

[cojoco]

I've attached a copy of what I'm seeing below. Specifically, I'm looking at the titles along the X-axis, as they are currently unreadable. Most other X-axis metadata don't seem to have any problems because they don't have to use every single piece of metadata they're given (for example, year can use just every 20 years).

[nOkuda]

Once upon a time, Dr. Ringger and Craig talked about "finding crumbs in the beard". The idea was to shrink the font size of the metadata so that it would be unreadable at first but then to zoom up the font size when the cursor gets placed over it. Might be useful in solving this problem.

[juanpaco]

Madison said she's interested in this.