Upload Cassava datasets

[dlebauer]

Available on Google Drive

• Vcmax ebimodeling/cassava#3 (ready for upload)
• Jmax ebimodeling/cassava#3 (ready for upload)
• Diurnal
• SLA (ready)
• yield, tuber biomass, aboveground biomasss

[dlebauer]

@gsrohde These have all passed the tests. Can I go ahead and upload them

[dlebauer]

Or have they been uploaded already?

[gsrohde]

It looks like these have been uploaded.