modified 'aggiungi test' menu item label
hide description textarea in new test form
reduced height of 'Messaggio Finale' textarea
default value of 'Messaggio Finale' set to empty string
default 'suddivisione' value set to ADA_SEQUENCE_TEST_MODE
modified 'Aggiungi sessione' label
re-show description textarea in new test form
reduced height of 'Messaggio Finale' and 'Descrizione' textarea
changed 'argomento' label into 'attività' in edit topic
CLOZE question types renamed acccording to ICoN standards
hide 'Consegna' textarea in edit question form
modified 'Descrizione' label to 'Item' in edit question form
added preview function in test view for author users
added support for making next navigation link work when points to a test
added next and previous navigation link to module test (commented out for ICoN reasons)