- UI - fix spinner, add hints to message

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

...r/src/app/common/search-table/search-table.component.html

...lar/src/app/common/search-table/search-table.component.ts

smp-angular/src/app/common/spinner/spinner.component.ts

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

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

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

.../keystore-edit-dialog/keystore-edit-dialog.component.html

...in/keystore-edit-dialog/keystore-edit-dialog.component.ts

...etails-dialog/service-group-details-dialog.component.html

.../app/service-group-edit/service-group-edit.component.html

...ststore-edit-dialog/truststore-edit-dialog.component.html

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

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

...uropa/ec/edelivery/smp/services/ConfigurationService.java

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

...opa/ec/edelivery/smp/services/ui/UITruststoreService.java

...eu/europa/ec/edelivery/smp/services/ui/UIUserService.java

...java/eu/europa/ec/edelivery/smp/sml/SmlClientFactory.java

...ain/java/eu/europa/ec/edelivery/smp/sml/SmlConnector.java