Author: Petr Škoda
MDL-44824 add missing subplugin type names
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f805fd1203151aba6d2a69cbc675b58382a2d48e
http://github.com/moodle/moodle/commit/f805fd1203151aba6d2a69cbc675b58382a2d48e
+ 2.7 en [subplugintype_tinymce,editor_tinymce]
+ 2.7 en [subplugintype_assignsubmission,mod_assign]
+ 2.7 en [subplugintype_assignsubmission_plural,mod_assign]
+ 2.7 en [subplugintype_assignfeedback,mod_assign]
+ 2.7 en [subplugintype_assignfeedback_plural,mod_assign]