Draft: Improve Miscellaneous settings
There is 2 main logical parts in the former "Miscellaneous" setting :
- first one is about how to handle available data attributes (which one to process, which one to ignore, etc)
- 2nde one is about how to handle IO (settings for the open file dialog, settings for default readers, etc)
This 2 parts are now splitted.
In the data attributes part, new settings has been added for attributes default visibility in charts.
Edited by Timothee Chabat