file xml with the survey "como son nuestros voluntarios"
modified validator
added info from failure to remove
bug solved, now check to see if the type is NoneType
update bugs
removed unused field
added defaults="" in fields that are not required, this avoids possible
	errors with types (NoneType, Unicode), for expample when a survey
	is read from xml file, before added in the ddbb type "NoneType" in
	the empty fields
deleted garbage
added code html and view to export xml survey
test to export/import xml survey
added: import survey xml to bbdd
return If there are msg of error when you import xml
added code html and view to import xml survey
update survey
update cosicas & bugs
close descriptorfile of temporyfile
added: calculated and stored the response time for each question
update utiles
update bugs,cosicas and tareas
added progress bar