Author: Vadim Dvorovenko
MDL-48798 Statistics: Adding lang string for user activity.
New lang string for 'Activity' (meaning count of user actions) in stats
reports to disambiguate it with 'Activity' (meaning course module).
AMOS BEGIN
CPY [activity,core],[useractivity,core]
AMOS END
http://git.moodle.org/gw?p=moodle.git;a=commit;h=fa51ff99692abbcaf6b182bc56ecb44448bbe536
http://github.com/moodle/moodle/commit/fa51ff99692abbcaf6b182bc56ecb44448bbe536
+ 2.7 en [useractivity,core]