Android: Automatic Kit creation

If both qt versions and ndk path exist automatically create Kits

Change-Id: If7739e866eeda3df2982850ff8f8cf22ca8f22c0
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/android/androidsettingspage.cpp

@@ -82,6 +82,10 @@ void AndroidSettingsPage::apply()
         else
             ProjectExplorer::ToolChainManager::instance()->registerToolChain(tc);
     }
+
+    // TODO deregister old automatic toolchains?
+
+    AndroidConfigurations::instance().updateAutomaticKitList();
 }
 
 void AndroidSettingsPage::finish()