Author: Serge Gauthier
MDL-51862 tool_lp: Create a persistent model user_competency_plan
http://git.moodle.org/gw?p=moodle.git;a=commit;h=8a9030c18ec2dbc67b25cf5672b8eedd5ce7bffb
http://github.com/moodle/moodle/commit/8a9030c18ec2dbc67b25cf5672b8eedd5ce7bffb
+ 3.1 en [invalidplan,tool_lp]