Merge branch 'w26_MDL-17081_m26_roles2' of git://github.com/skodak/moodle
MDL-39088 add new general uninstall url support to plugin manager
MDL-39088 migrate block uninstallation to plugin_manager
MDL-39088 migrate course format uninstallation to plugin_manager
MDL-39088 migrate editor uninstallation to plugin_manager
MDL-39088 migrate enrol uninstallation to plugin_manager
MDL-39088 migrate local uninstallation to plugin_manager
MDL-39088 migrate module uninstallation to plugin_manager
MDL-39088 migrate plagiarism uninstallation to plugin_manager
MDL-39088 migrate report uninstallation to plugin_manager
MDL-39088 migrate admin tool uninstallation to plugin_manager
MDL-39088 migrate tinymce plugins uninstallation to plugin_manager
MDL-39088 use word "Uninstall" consistently in plugin administration UI