Revert "Route: <action> can be a number (BC break)"

This is too big BC break for route definitions.

This reverts commit 59d892d.

Author: dg

src/Application/Routers/Route.php

@@ -70,7 +70,7 @@ class Route extends Nette\Object implements Application\IRouter
 			self::FILTER_OUT => array(__CLASS__, 'presenter2path'),
 		),
 		'action' => array(
-			self::PATTERN => '[a-z0-9][a-z0-9-]*',
+			self::PATTERN => '[a-z][a-z0-9-]*',
 			self::FILTER_IN => array(__CLASS__, 'path2action'),
 			self::FILTER_OUT => array(__CLASS__, 'action2path'),
 		),

tests/Application.Routers/Route.basic.phpt

@@ -51,12 +51,6 @@ testRouteIn($route, '/presenter/action', 'Presenter', array(
 	'test' => 'testvalue',
 ), '/presenter/action/?test=testvalue');
 
-testRouteIn($route, '/presenter/123', 'Presenter', array(
-	'action' => '123',
-	'id' => '',
-	'test' => 'testvalue',
-), '/presenter/123/?test=testvalue');
-
 testRouteIn($route, '/presenter/', 'Presenter', array(
 	'id' => '',
 	'action' => 'default',