Avoid final version to amendments

If the motion is a paragraph based amendment the user cannot create a
final version anymore

client/src/app/site/motions/modules/motion-detail/components/motion-detail/motion-detail.component.html

@@ -553,7 +553,7 @@
                     type="button"
                     mat-icon-button
                     matTooltip="{{ 'Create final print template' | translate }}"
-                    *ngIf="motion.state.isFinalState && !motion.modified_final_version"
+                    *ngIf="showCreateFinalVersionButton"
                     (click)="createModifiedFinalVersion()"
                 >
                     <mat-icon>file_copy</mat-icon>
@@ -564,6 +564,7 @@
                     type="button"
                     mat-icon-button
                     *ngIf="isRecoMode(ChangeRecoMode.ModifiedFinal) && !isFinalEdit"
+                    matTooltip="{{ 'Edit final print template' | translate }}"
                     (click)="editModifiedFinal()"
                 >
                     <mat-icon>edit</mat-icon>
@@ -574,6 +575,7 @@
                     *ngIf="isRecoMode(ChangeRecoMode.ModifiedFinal) && isFinalEdit"
                     mat-icon-button
                     [disabled]="!finalVersionEdited"
+                    matTooltip="{{ 'Save final print template' | translate }}"
                     (click)="onSubmitFinalVersion()"
                 >
                     <mat-icon>save</mat-icon>
@@ -583,6 +585,7 @@
                     type="button"
                     *ngIf="isRecoMode(ChangeRecoMode.ModifiedFinal) && isFinalEdit"
                     mat-icon-button
+                    matTooltip="{{ 'Cancel editing without saving' | translate }}"
                     (click)="cancelFinalVersionEdit()"
                 >
                     <mat-icon>close</mat-icon>

client/src/app/site/motions/modules/motion-detail/components/motion-detail/motion-detail.component.ts

@@ -171,6 +171,17 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
         return this.motion.showPreamble;
     }
 
+    public get showCreateFinalVersionButton(): boolean {
+        if (
+            this.motion.isParagraphBasedAmendment() ||
+            !this.motion.state.isFinalState ||
+            this.motion.modified_final_version
+        ) {
+            return false;
+        }
+        return true;
+    }
+
     /**
      * Saves the target motion. Accessed via the getter and setter.
      */
@@ -1267,6 +1278,9 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
      * Sets the modified final version to the final version.
      */
     public async createModifiedFinalVersion(): Promise<void> {
+        if (this.motion.isParagraphBasedAmendment()) {
+            throw new Error('Cannot create a final version of an amendment.');
+        }
         // Get the final version and remove line numbers
         const changes: ViewUnifiedChange[] = Object.assign([], this.getChangesForFinalMode());
         let finalVersion = this.repo.formatMotion(