Global Lua Modules/Autocalctable

Adds summation/average/min/max values of a column of a table imported from json/module/csv pag.

Syntax
Where calc = sum/avg/min/max - can be more than one separated by commas ,e.g.


 * calc=sum,avg
 * pagename =name of page/module
 * datatype = json or lua or cvs