Change the parent of the WizardDialog to that of the Spreadsheet window.
Previously the WizardDialog was using the open file dialog as the
parent resulting in the csv import dialog
SPDX License Identifiers are a more compact / standardized
way of representing file license information.
See: https://spdx.dev/resources/use/#identifiers
This was done with the `ambr` search and replace tool.
ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
