Plot and 7-number summaries off-by-one

[thermokarst]

Bug Description
In the "Interactive Quality Plot" tab of the summarize viz, the index numbering scheme varies between the 7-number csv summary (0-start), and the D3 plot (1-start).

Steps to reproduce the behavior

1. Go to https://view.qiime2.org/?src=https%3A%2F%2Fdocs.qiime2.org%2F2019.10%2Fdata%2Ftutorials%2Fmoving-pictures%2Fdemux.qzv

Expected behavior
The viz should utilize consistent indexing.

References

1. Original forum post

[gregcaporaso]

Confirmed that this is still an issue. We should adapt the csv file to start counting at 1.