Fixed broken manifest for full screen video

AndroidManifest.xml

@@ -88,9 +88,8 @@
         
 		<activity	android:name="com.owncloud.android.ui.preview.PreviewImageActivity" />
 		        
-        <activity	android:name="com.owncloud.android.ui.activity.PreviewVideoActivity"
+        <activity	android:name="com.owncloud.android.ui.preview.PreviewVideoActivity"
 					android:label="@string/app_name"
-					android:screenOrientation="landscape"
 					android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
 		</activity>