Make circle diagrams clickable again

[cbaakman]

In the previous version of why_not frontend, a page for listing entries was shown whenever the user clicked for a group of entries. Like: dssp, present, giving all the present entries in the dssp databank.

These selections were available by clicking either the circle diagram itself or by clicking the names. (present, valid, annotated, etc.)

It would be usefull to have this option back, so that I can see which entries in the databanks still need annotation/build.

[cbaakman]

I see this relates to #32

[jonblack]

Also relates to #36. A short term solution is to show a table with the numeric values and a link; otherwise, solving #36 will make solving this easier.