Do not load refinery admin javascripts again.

Refinery itself takes care of loading the admin javascripts including
pagination.

Including this line results in it being included twice -- once by this
manifest and once by refinerycms-core's refinery/application manifest.

Note that this change must be used in conjunction with moving the
visual_editor_javascripts block on refinerycms-core to *after*
the refinery/application include tag.
Merge pull request #10 from kalleth/dont_load_refinery_admin_js_again

Do not load refinery admin javascripts again.