allow users to permanently delete their account

src/main/webapp/templates/profile.html

@@ -50,6 +50,7 @@
 		<div class="form-actions">
 			<button type="submit" class="btn btn-primary">Save</button>
 			<button type="button" class="btn" ng-click="cancel()">Cancel</button>
+			<button type="button" class="btn btn-danger" ng-click="deleteAccount()">Delete account</button>
 		</div>
 	</form>
 </div>