Git commits in Moodle 2.7.4 by Matteo Scaramuccia

commit dbfa535dfcf2d448f29cca94a0e745ee5f509b44
Author: Matteo Scaramuccia <moodle@matteoscaramuccia.com>
Date:   Sun, 09 Nov 2014 15:06:46 +0800
Tag:    v2.7.4

MDL-48023 Files API: Theme files must be cache-able by shared proxies.