Fix reload cron expresion and small updates for alert table

smp-angular/src/app/alert/alert-controller.ts

smp-angular/src/app/alert/alert-ro.model.ts

smp-angular/src/app/alert/alert.component.html

smp-angular/src/app/alert/alert.component.ts

smp-angular/src/app/app.module.ts

...-properties-dialog/object-properties-dialog.component.css

...properties-dialog/object-properties-dialog.component.html

...t-properties-dialog/object-properties-dialog.component.ts

...assword-change-dialog/password-change-dialog.component.ts

smp-angular/src/app/property/property.component.html

...eu/europa/ec/edelivery/smp/config/DatabaseProperties.java

...u/europa/ec/edelivery/smp/cron/SMPDynamicCronTrigger.java

...eu/europa/ec/edelivery/smp/data/dao/ConfigurationDao.java

...ain/java/eu/europa/ec/edelivery/smp/data/dao/UserDao.java

...in/java/eu/europa/ec/edelivery/smp/data/model/DBUser.java

...main/java/eu/europa/ec/edelivery/smp/data/ui/AlertRO.java

...uropa/ec/edelivery/smp/data/ui/enums/SMPPropertyEnum.java

...ava/eu/europa/ec/edelivery/smp/services/AlertService.java

...u/europa/ec/edelivery/smp/services/ui/UIAlertService.java

...uropa/ec/edelivery/smp/services/ui/UIPropertyService.java