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=5e25d5630b2958214583ba17a924f4d3d4e74038
http://github.com/moodle/moodle/commit/5e25d5630b2958214583ba17a924f4d3d4e74038
+ 2.8 en [useractivity,core]