v1.39

- Big work on mobile/tablet version
- new scrolls added on the planning, you can now fix display horizontaly and verticaly
- you can now click on the planning header, it will display the planning based on the clicked day/week/month
- Fixed several specific cases on task repeat
- added parameters to define column width in the planning
- added parameters to define cells/tasks width in the planning
- added many new themes with new colors
- added option to let/block guests creating tasks (only if guest access is activated)
- Improve upgrade system, tackle some specific cases
- Improve form fields when filling hours
- Several libraries updated for security and browser compatibility
- user identifier updated to 20 chars max (10 in the past)
- Various bugfixes and small improvements coming from users feedback
