Import of CSV files for DB upload

[justinclift]

@danfowler had an interesting idea. When a person uploads a database file, the server side should also accept and import CSV files.

This probably wouldn't be hard to do (eg detect CSV format, convert to SQLite, import that). We may be able to extend it to other files types as well.

[justinclift]

Note to self, when doing the import it would be useful to detect the date type of columns. Something like this would be useful as a first implementation approach:

    sqlitebrowser/sqlitebrowser#1003 (comment)