Add a bill-to-bill detail page

[aih]

The route should be something like /compare/116hr300/116hr1500

And it should be linked from a column to the left of the bill name in the Similar bills table with an icon like

See https://www.freepik.com/free-icon/compare-files_696340.htm

[aih]

The page should expand on the information in the row for the given bill. For example, /compare/116hr300/115hr1116 will have the title:

Similarity between 116hr300 and 115hr1116

Below this, will be listed the titles of the two bills, in the form of the 'Titles' column above:

116 HR 300 IH: ....
115 HR 1116 RH: TAILOR Act of 2017...

It will have a table with the title 'Sections Matched'. In this case, there will be 7 rows, because there are 7 'sections matched' between 116hr300 and 115hr1116

There will be three columns: the Score of each section match, the section match from 116hr300 and the section match from 115hr1116. I am not sure that the second column (the section from 116hr300) is available, but it would be great if it is.

[aih]

Current view:

Running to load this data (not yet complete):

[aih]

Processing is still ongoing. But it looks like it's working well!

[aih]

Implemented in PR #88