More missing Italian translations

lang/lang_en_it.txt

@@ -172,7 +172,7 @@
 
 #MSG_CHECKING_FILE c=17
 "Checking file"
-"\x00"
+"Verifica file"
 
 #MSG_NOT_COLOR c=19
 "Color not correct"
@@ -216,7 +216,7 @@
 
 #MSG_COMMUNITY_MADE c=18
 "Community made"
-"\x00"
+"Contribuiti"
 
 #MSG_DISABLE_STEPPERS c=18
 "Disable steppers"
@@ -1400,4 +1400,4 @@
 
 #MSG_PRINTER_IP c=18
 "Printer IP Addr:"
-"\x00"
+"Ind. IP stampante:"