Added sign in errors and logos.

translations/es-MX/common.json

@@ -1,5 +1,8 @@
 {
 	"translation": {
+		"app": {
+			"title": ""
+		},
 		"general": {
 			"actions": {
 				"signout": ""
@@ -27,6 +30,11 @@
 			"actions": {
 				"signin": ""
 			},
+			"errors": {
+				"emailformat": "",
+				"usernotfound": "",
+				"wrongpassword": ""
+			},
 			"fields": {
 				"email": "Email",
 				"password": ""