Actualizado codigo a la ultima version de la BD
Document creation and file upload implemented
criterions for documents declaration implemented, without experts special case
implemented Punctuations row creation and update (uploadCost case), implemented payment for documents uploads
Documents download funcionality fully implimented, also, corrected warning raised in epi/EpiSession.php file, part of the epiphany framework
Now in error all methods return the field error with a meaninghful message
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