Allow resetting password through email.

This also adopts the use of an Alert template for error and success messages.

models/Dispatcher.php

@@ -21,6 +21,7 @@ class Dispatcher
 			'managetags' => 'ManageTags',
 			'manageusers' => 'ManageUsers',
 			'people' => 'ViewPeople',
+			'resetpassword' => 'ResetPassword',
 			'suggest' => 'ProvideAutoSuggest',
 			'timeline' => 'ViewTimeline',
 			'uploadmedia' => 'UploadMedia',
@@ -77,6 +78,11 @@ class Dispatcher
 			else
 				self::trigger403();
 		}
+		catch (UserFacingException $e)
+		{
+			$debug_info = ErrorHandler::getDebugInfo($e->getTrace());
+			ErrorHandler::display($e->getMessage(), $debug_info, false);
+		}
 		catch (Exception $e)
 		{
 			ErrorHandler::handleError(E_USER_ERROR, 'Unspecified exception: ' . $e->getMessage(), $e->getFile(), $e->getLine());
@@ -93,7 +99,7 @@ class Dispatcher
 	public static function kickGuest()
 	{
 		$form = new LogInForm('Log in');
-		$form->setErrorMessage('Admin access required. Please log in.');
+		$form->adopt(new Alert('', 'You need to be logged in to view this page.', 'error'));
 		$form->setRedirectUrl($_SERVER['REQUEST_URI']);
 
 		$page = new MainTemplate('Login required');