Show error message when adding invalid time slot #528
Description
Describe the bug
Plug-in allows invalid timeslot with non-error message shown to the user.
To reproduce
When adding a timeslot with same day and duration (e.g. begin: Sunday 00:00 - end: Sunday 00:00), the page refresh but no time slot is added (as expected).
Expected behavior
Shows a message to the user stating that the time slot added is invalid.
Operating system
Windows
GLPI Agent version
Other (See additional context below)
GLPI version
Other (See additional context below)
GLPIInventory plugin
1.3.5
Additional context
GLPI Agent version: 1.9.0
GLPI version: 10.0.16