Improve our Parse Dashboard CSV import/export page

[erictuvesson]

Improve documentation

Link

https://docs.noodl.net/2.9/docs/guides/cloud-data/import-export-csv/

Describe the problem

Right now it is lacking information about how the CSV importer is matching the columns, there are probably more things that we could improve in here. Are we covering all the data types?

Describe the improvement

• Summarize a good understanding of how the CSV import is matching the headers.
• What kind of classes can be imported into? Are some columns ignored?
• How does Export to Import work? Are there any downsides?