Major rewrite of KCron :
- Improve file names
- Replace the old tree view by 2 separated list : 1 for the Cron Tasks, 1 for the Environment Variables
- Improve the usability (integrates a contextual menu, key processing)
- Remove useless actions in menu bar and status bar
- Generate a more clear and clean description for the next schedules of a tasks
- Generate a more clever string for crontab saves (use the */x periods if possible)
- Display in the view the raw crontab format for scheduling
- Reorganize the lists (to looks like the crontab config file)
- For the moment root access does not work anymore, it will be reenabled in the next commits