Introduce global file name schema

I'm quite new to this app, but what stesses me extreme is - I configured auto upload with a useful default with YYYY (4 digits) - so it cannot confuse me if 17-06-05 is shown and I'm not sure if this 17 is the day of a month or the year.

But when I upload a file with the "+"-button I will be asked again what file name schema I'd like to use. My previously pre-configured auto-upload schema is not re-used. It starts asking me again and again if I want to customize the default on every upload.

Whatever I configured there in auto-upload - should become a global setting or we should introduce a new global default setting. I think most users will use just one schema all times and reconfiguration is just an edge case.

I do not like to configure this several 100.000 times in my life for every file. I would also vote for changing the default of the app to YYYY and not just YY.

Start by tracing the auto-upload filename schema setting and the filename-schema prompt opened from the + button. Review the existing issue discussion before deciding whether the auto-upload value should become global or a separate default. Done means manual uploads reuse the configured schema and the default year format is addressed if that option is selected.