Quick win: Volume DF -> DCV, tweak column names, tooltip text, column order

[trentmc]

Background / motivation

Here's the status quo of https://df.oceandao.org/volume-df, "DCV" selection:

The tooltips are very generally very helpful. The column names are alright, but we can make some tweaks to greatly help understanding. Quick win FTW:)

Getting a bit more specific, some column names are confusing, and others inconsistent. Tooltips could use some tweaks. And we can tweak the column order.

Precise Issues, and TODOs

Here are the precise issues, with precise fixes.

"Rnd5 Avg DCV" label + tooltip "Average Data Consume Volume of a Dataset for the last 5 Data Farming rounds"

• Problem: "last" implies "this is the final rounds ever." (Common English grammar mistake).
• [x] To fix: tooltip "last" -> "previous"
• Problem: "Rnd5 Avg DCV" implies "Data Farming Round 5".
• [x] To fix: change label to "Prev5 Avg DCV"

"Rnd5 Avg DCV" label ...

• Problems: like "Rnd5 Avg DCV"
• [x] To fix: tooltip "last" -> "previous"
• [x] To fix: change label to "Prev3 Avg DCV"

"Rnd Volume" label + tooltip "Total Data Consume Volume of a Dataset for the current Data Farming round"

• Problem: "Volume" is used, inconsistent with "DCV" everywhere else
• Problem: "Rnd" doesn't imply current round
• [x] To fix: change label to "Cur DCV"

"Last Rnd Volume" label + tooltip "Total Data Consume Volume of a dataset for the previous round of Data Farming"

• Problem: in label, "last" grammar mistake
• [x] To fix: change label to "Prev DCV"
• Problem: tooltip text is a bit inconsistent with other ones involving previous rounds. We have an opportunity for better consistency, to ease understanding
• [x] To fix: change tooltip text to "Data Consume Volume of a Dataset for the previous Data Farming round"

Column ordering

• Problem: order left to right is: prev 5, prev 3, current, prev 1. It's a confusing order because "current" is in wrong place
• [x] To fix: swap the order of current <> prev 1. Such that the order left to right is: prev 5, prev 3, prev 1, current.

[idiom-bytes]

Thank you for detailing the exact adjustments to make in this task to fix the columns.