Merge pull request #20 from vinkla/fix-19

Change wordpress package to fetch from zip file.
Merge pull request #22 from magnus-bergman/master

Update WordPress.
Added another function to stop updates of plugins

See more information here:
http://premium.wpmudev.org/forums/topic/difference-between-pre_set_site_transient_update_plugins-and-site_transient_update_plugins
Merge pull request #25 from vinkla/fix-23

Added another function to stop updates of plugins.