Author: Paul Holden
MDL-70795 reportbuilder: editor elements to set column aggregation.
Aggregation of report columns allows the report editor to perform
common types of data aggregation (concatenation, sum, count, etc)
on given columns.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f47e89a9bd6bb5dfc1b36c0dcab0ac4fdca5c2c1
http://github.com/moodle/moodle/commit/f47e89a9bd6bb5dfc1b36c0dcab0ac4fdca5c2c1
+ 4.0 en [aggregatecolumn,core_reportbuilder]
+ 4.0 en [aggregationavg,core_reportbuilder]
+ 4.0 en [aggregationcount,core_reportbuilder]
+ 4.0 en [aggregationcountdistinct,core_reportbuilder]
+ 4.0 en [aggregationgroupconcat,core_reportbuilder]
+ 4.0 en [aggregationgroupconcatdistinct,core_reportbuilder]
+ 4.0 en [aggregationmax,core_reportbuilder]
+ 4.0 en [aggregationmin,core_reportbuilder]
+ 4.0 en [aggregationnone,core_reportbuilder]
+ 4.0 en [aggregationpercent,core_reportbuilder]
+ 4.0 en [aggregationsum,core_reportbuilder]
+ 4.0 en [columnadded,core_reportbuilder]
+ 4.0 en [columnaggregated,core_reportbuilder]