Author: Ankit Agarwal
MDL-60861 analytics: Remove enable menu, if no timesplitting method
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f9e09bd96381682ae540a4be026c0c0fca9cc857
http://github.com/moodle/moodle/commit/f9e09bd96381682ae540a4be026c0c0fca9cc857
+ 3.4 en [timesplittingnotdefined,tool_analytics]
+ 3.4 en [timesplittingnotdefined_help,tool_analytics]