Updated webpages tree helper, and removed utils.treehelper so that the plugin is not required to be installed when creating a new site.  Also updated the install controller so that after install you get redirected to the homepage of the site.
Updated webpages tree helper, and removed utils.treehelper so that the plugin is not required to be installed when creating a new site.  Also updated the install controller so that after install you get redirected to the homepage of the site.