Move class files to includes/

Cleans up the top-level directory a bit.

Change-Id: I29d3b8b7098def77e643232a386d8ba834d35704

includes/Hooks.php

@@ -1,7 +1,10 @@
 <?php
-/**
- * VectorHooks.php
- */
+
+namespace Vector;
+
+use OutputPage;
+use SkinTemplate;
+use SkinVector;
 
 /**
  * Hook handlers for Vector skin.
@@ -9,8 +12,7 @@
  * Hook handler method names should be in the form of:
  *	on<HookName>()
  */
-
-class VectorHooks {
+class Hooks {
 	/**
 	 * BeforePageDisplayMobile hook handler
 	 *

skin.json

@@ -25,14 +25,14 @@
 		]
 	},
 	"AutoloadClasses": {
-		"VectorHooks": "VectorHooks.php",
-		"SkinVector": "SkinVector.php",
-		"VectorTemplate": "VectorTemplate.php",
-		"Vector\\ResourceLoaderLessModule": "ResourceLoaderLessModule.php"
+		"Vector\\Hooks": "includes/Hooks.php",
+		"SkinVector": "includes/SkinVector.php",
+		"VectorTemplate": "includes/VectorTemplate.php",
+		"Vector\\ResourceLoaderLessModule": "includes/ResourceLoaderLessModule.php"
 	},
 	"Hooks": {
 		"BeforePageDisplayMobile": [
-			"VectorHooks::onBeforePageDisplayMobile"
+			"Vector\\Hooks::onBeforePageDisplayMobile"
 		]
 	},
 	"@note": "When modifying skins.vector.styles definition, make sure the installer still works",