Adding generic conditions to XML model

Also update some attributes.
Only seb.xml and seb-photos.xml configurations work for now.
Model update

Remove previous versions reader for configuration. Only keep last version.
Ok it compiles now ... :)
Adding special attributes to properties

Usefull for export/tagged/hide/error
Update configurations

Remove not so usefull ones
Refactoring to simplify types of files
Simplify file creation
Better error handling

On file creation if a regex attribute fails on matching, it update an error attribute.
Adding a filter to filter files with error.

Update gitignore