File flow.

[tse-lao]

- Change Polybase to public, so we don't have the sign in order to see the metadata of the file.

• Add download to the page.
• Automatically do this and put it in Polybase.
• All the upload we provide access to our publicKey => we can Analyze the data without signing the message.
• disable download/ getmetadata when file is still encrypted.
• Fix the max with of the file.