Author: Eric Merrill
MDL-53325 search: Optimize Solr less often
http://git.moodle.org/gw?p=moodle.git;a=commit;h=bf2235bb11ca040558478e6fc5d6717dbcb13693
http://github.com/moodle/moodle/commit/bf2235bb11ca040558478e6fc5d6717dbcb13693
+ 3.1 en [taskglobalsearchindex,core_admin]
+ 3.1 en [taskglobalsearchoptimize,core_admin]
- 3.1 en [taskglobalsearch,core_admin]
+ 3.1 en [optimizetask,search_solr]