#525 Create a graph of pubs by type by binding/format by year

[Ahasuerus]

Create a graph of pubs by type by binding/format by year. The data should be shown as percent of the total pubs of that type for the year. Ideally, there would be only one graph with multiple colored line representing different title types.

[Ahasuerus]

Implemented in:

biblio/pubs_by_format.py 1.1
biblio/stats-and-tops.py 1.11
biblio/TARGETS 1.25

Installed in r2014-91 on 2014-02-14. Closing.