FireServiceRota Scheduling

## Duty Transaction - Bug fix: Now, when user request an absence, the date selector keeps at the user slection if the avialability code does not have adjust default time. ### Group Rota - Bug fix: Fixed an issue by decreasing the maximum schedule lookahead to get the correct intervals in Wholetime. ### Authentication - Fixed an issue that randomly signed you out while the app sat in the background. ### Group Rota - Added visibility for tiered response levels on the Group Rota screen. - Bug fix: Availability changes after the first one are now reflected on the Group Rota straight away, instead of only after a pull to refresh. ### Incidents - Fixed an issue that caused connections to drop and display a red indicator on the Incidents screen. ### Settings - Added a setting to turn off the sound that plays when you accept or reject an incident. The setting applies to this device only. - Bug fix: Restores the user's volume after receiving an incident push notification.