Author: Bas Brands
MDL-71456 theme_boost: drawers for blocks and the course index
http://git.moodle.org/gw?p=moodle.git;a=commit;h=4fa713b0d4abcb8a48832818272dab98a6a6392c
http://github.com/moodle/moodle/commit/4fa713b0d4abcb8a48832818272dab98a6a6392c
+ 4.0 en [closedrawer,core]
+ 4.0 en [courseindex,core]
+ 4.0 en [opendrawerblocks,core]
+ 4.0 en [opendrawerindex,core]