Change metadata tabs on front page

[t-morrison]

Why

Sources

2 sources is misleading. The RGI documents come from thousands of sources. Having "2,342 Sources" would not be anymore useful though.

Datasets

Showing 6,000 datasets is misleading because as I flagged in #50 they are not "datasets" as most would consider. Also, it just doesn't tell a user much about the site.

Countries

This is OK

What

Unsure what fields would best replace "Sources" and "Datasets". Perhaps "Years" as in years covered (substantial number including EITI data but also misleading) could be one?

Additionally, these seem like they would be links but are not. Should be added as such if they are ultimately kept and there is a relevant location to link to.

[t-morrison]

Thoughts @anderspeders? Similar to our discussion on RP front page.

[mattfullerton]

I would propose listing #documents and #datasets separately, where datasets is all datasets with tabular data attached (i.e. PDFs excluded) and documents are the PDFs.

There are more elegant ways to do this as its a common problem facing open data/transparency portals: how do we describe open information that isn't really a dataset (think council meeting minutes, planning permission documents, etc.)

cf. #50

[t-morrison]

"Datasets" & "Documents" makes sense to me. I think go for it.

[anderspeders]

Please go ahead Matt

[mattfullerton]

Please note we will see documents > 0 once we do a fresh import; waiting for feedback on #78