OPAL-1576: Adding commands to import-csv
(cherry picked from commit 24b47f0)
OPAL-1576: Set all csv import parameters
(cherry picked from commit 8ab9b99)
OPAL-1576: Adding commands to import-xml
OPAL-1576: Adding commands to import xml
OPAL-1576: import import_xml.py
OPAL-1576: import csv fixing self.type
OPAL-1576: Set import_xml file
OPAL-1576: Changed path help text
OPAL-1576: Adding limesurvey arguments
OPAL-1576: Print pretty json format
OPAL-1576: Table prefix is not required