Fix: Some problems with loan module

FIX: Error show list invoice when sql_mode=only_full_group_by

Fix: Missing language key

Fix: remove pdfmake for avoid errors

FIX: Contract Error insert or edit empty value MYSQL 5.7

FIX: #5779 Field 'File' is required

sent

Fix: Not remove expensereport from menu. Menu of the module still in module file descriptor