Author: Davo Smith
MDL-31110 Filemanager drag and drop upload - always hide spinner, even when errors occur
http://git.moodle.org/gw?p=moodle.git;a=commit;h=4069ae323d3122b046c9c020fa48294052aa2b27
http://github.com/moodle/moodle/commit/4069ae323d3122b046c9c020fa48294052aa2b27
+ 2.3 en [serverconnection,core_error]