Author: David Monllaó
MDL-65633 tool_analytics: Notification for invalid analysis intervals
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5ef49c591a9578bfa0f5b5cfb2c72b27ab8a3de1
http://github.com/moodle/moodle/commit/5ef49c591a9578bfa0f5b5cfb2c72b27ab8a3de1
+ 3.8 en [invalidcurrenttimesplitting,tool_analytics]
+ 3.8 en [invalidindicatorsremoved,tool_analytics]
+ 3.8 en [invalidtimesplitting,tool_analytics]
+ 3.8 en [invalidtimesplittinginmodels,tool_analytics]
+ 3.8 en [errorcannotusetimesplitting,core_analytics]