Make author information configurable on a settings level.

The Document Information dialog's Author tab becomes read only and just shows who
last saved the document.

The author information is shared across all calligra apps, and can hold any number of
author profiles. The user creates and deletes author profiles through the settings dialog.

The profiles are stored in the calligra wide config.

In the settings menu a submenu should be added where you can choose the active profile.

The active profile is stored in the application's config.

BUG:260469
BUG:260478
It also solves the bug (no number) that save cycles number was never incremented