Add reprompt help link (#963)

src/app/vault/add-edit.component.html

@@ -250,7 +250,11 @@
                         <input id="favorite" type="checkbox" name="Favorite" [(ngModel)]="cipher.favorite">
                     </div>
                     <div class="box-content-row box-content-row-checkbox" appBoxRow>
-                        <label for="passwordPrompt">{{'passwordPrompt' | i18n}}</label>
+                        <label for="passwordPrompt">{{'passwordPrompt' | i18n}}
+                            <a href="#" appA11yTitle="{{'learnMore' | i18n}}" (click)="openHelpReprompt()">
+                                <i class="fa fa-question-circle-o" aria-hidden="true"></i>
+                            </a>
+                        </label>
                         <input id="passwordPrompt" type="checkbox" name="PasswordPrompt" [ngModel]="reprompt"
                             (change)="repromptChanged()">
                     </div>

src/app/vault/add-edit.component.ts

@@ -94,4 +94,8 @@ export class AddEditComponent extends BaseAddEditComponent implements OnChanges,
     markPasswordAsDirty() {
         this.form.controls['Login.Password'].markAsDirty();
     }
+
+    openHelpReprompt() {
+        this.platformUtilsService.launchUri('https://bitwarden.com/help/article/managing-items/#protect-individual-items');
+    }
 }