added an all option for section field of plan invite

dmp-frontend/src/app/core/model/dmp/dmp.ts

@@ -140,7 +140,7 @@ export interface DmpUserPersist {
 	user: Guid;
 	role: DmpUserRole;
 	email: string;
-	sectionId: Guid;
+	sectionId: string;
 }
 
 export interface DmpUserRemovePersist {

dmp-frontend/src/app/ui/dmp/dmp-editor-blueprint/dmp-editor.model.ts

@@ -526,7 +526,7 @@ export class DmpUserEditorModel implements DmpUserPersist {
 	role: DmpUserRole;
 	email: string;
 	userType: DmpUserType = DmpUserType.Internal;
-	sectionId: Guid;
+	sectionId: string = '';
 
 	protected formBuilder: UntypedFormBuilder = new UntypedFormBuilder();
 
@@ -539,7 +539,7 @@ export class DmpUserEditorModel implements DmpUserPersist {
 		this.role = item.role;
 		// TODO this.email = item.email;
 		this.userType = (item == null || this.user != null) ? DmpUserType.Internal : DmpUserType.External;
-		this.sectionId = item.sectionId;
+		this.sectionId = item.sectionId?.toString() || ''; //Trick to allow a null option for all items.
 
 		return this;
 	}

dmp-frontend/src/app/ui/dmp/dmp-user-field/dmp-user-field.component.html

@@ -69,8 +69,9 @@
 	</div>
 	<div class="col-12 col-xl mt-3" *ngIf="sections">
 		<mat-form-field class="w-100">
-			<mat-label>{{'DMP-EDITOR.FIELDS.SECTION' | translate}}</mat-label>
+			<mat-label>{{'DMP-EDITOR.FIELDS.SECTIONS' | translate}}</mat-label>
 			<mat-select [formControl]="user.get('sectionId')">
+				<mat-option value="">{{'DMP-EDITOR.FIELDS.ALL-SECTIONS' | translate}}</mat-option>
 				<mat-option *ngFor="let section of sections" [value]="section.id">
 					{{ section.label }}
 				</mat-option>

dmp-frontend/src/assets/i18n/en.json

@@ -1525,7 +1525,8 @@
 			"EMAIL": "Email",
 			"USER": "User",
 			"USER-ROLE": "Role",
-			"SECTION": "Specific DMP Section",
+			"SECTIONS": "Plan Sections",
+			"ALL-SECTIONS": "All",
 			"DMP-BLUEPRINT-VERSION": "Version"
 		},
 		"ACTIONS": {