Add Overall Project Stats

[mdfeist]

I was thinking of the following:

• of Declarations

• of Invocations

• of types used in project vs # of types used in time period

• of Authors

• Average declarations per Author
• Average invocations per Author
• Type coverage for authors (so percentage)
• Average/Min/Max type coverage for authors

I was just going to try and calculate it in the JS.

[mdfeist]

@watts1 Take a look at the example json, project_view.html, and generate_table.js

[eddieantonio]

• [x] Add overview plot
• [x] Add cumulative types graph
• [x] Add cumulative files graph
• [ ] Correlation between two metrics

[eddieantonio]

This is (mostly) done as of 88ef65b.