شابلون:FormatDate start end

This sub-template handle, by default, the basic functions when it is called without <format> parameter or 
 when the specific sub-template for the <format> doesn't exist.
Although the main object of Template:FormatDate_start_end is to present a compressed format for a range of dates 
 avoiding month and year redundancy, the different output formats according with each language, must be handle by an 
 specific sub-template.

Input parameters:
* format: name (suffix) of sub-template to build specific format
* start : property for start date of range; default is P580 
* end   : property for end   date of range; default is P582 
* place : property for qualifier of dates depicting place where happend; default is no place
* separator: digits to show between dates. default is  - 

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