improved duration and minute selector (#2264)

* do not close modal if form is dirty
* deprecated TimesheetConfiguration
* inject timezone in form types
* cleanup usage of UserDateTimeFactory
* allow to configure increment steps for minutes
* use 15 minutes step for datetimepicker in project edit form
* use rounding rules for increments in minute select for begin and end
* allow duration in multi user and admin timesheet forms
* make dropdown values configurable

config/packages/kimai.yaml

@@ -29,6 +29,14 @@ kimai:
         # This setting can be changed through the Administration screen
         # markdown_content: false
 
+        # Configures the duration drop-down select.
+        # null = use rounding rules, 0 = deactivate, every other number is used as minute/step increment
+        # duration_increment: ~
+
+        # Configures the minute select for begin and end date-time.
+        # null = use rounding rules, every number > 0 is used as minute/step increment
+        # time_increment: ~
+
         # The time-tracking mode that should be used.
         # See https://www.kimai.org/documentation/timesheet.html#tracking-modes
         # mode: default