Rename Spot to Livetrail internally

resources/lang/en.json

@@ -73,7 +73,7 @@
 	"feed": {
 		"counter": "#$0",
 		"id": "Feed ID",
-		"last_update": "Last Spot update",
+		"last_update": "Last SPOT update",
 		"name": "Name",
 		"new": "New feed",
 		"plural": "Feeds",

resources/lang/es.json

@@ -73,7 +73,7 @@
 	"feed": {
 		"counter": "N.º $0",
 		"id": "ID Feed",
-		"last_update": "Última actualización de Spot",
+		"last_update": "Última actualización de SPOT",
 		"name": "Descripción",
 		"new": "Nuevo feed",
 		"plural": "Feeds",

resources/lang/fr.json

@@ -73,7 +73,7 @@
 	"feed": {
 		"counter": "N°$0",
 		"id": "ID feed",
-		"last_update": "Dernière vérification Spot",
+		"last_update": "Dernière vérification de SPOT",
 		"name": "Description",
 		"new": "Nouveau feed",
 		"plural": "Feeds",