This PR proposes a solution for:

• the “quick scheduling poll” not storing properly as notified by Quick Scheduling Polls are not store to Drive and cannot be stored #1718.
• missing “submit message” when making a copy of a form Submit message doesn't persist when using form templates #1716

The solution for #1718 changes the behaviour of CryptPad as it creates a “quick schedule poll”-named file instead of the default generated filename. However it coincides better with real templates. When creating a file, it inherits the template name.