fixed missing language key on image uploader modal

public/language/de/user.json

@@ -18,7 +18,7 @@
 
 	"change_picture": "Ändere Profilbild",
 	"edit": "Ändern",
-	"uploaded_pictures": "Hochgeladene Bilder",
+	"uploaded_picture": "Hochgeladene Bilder",
 	"upload_new_picture": "Neues Bild hochladen",
 	"change_password": "Ändere Passwort",
 	"confirm_password": "Passwort wiederholen",

public/language/en/user.json

@@ -18,7 +18,7 @@
 
 	"change_picture": "Change Picture",
 	"edit": "Edit",
-	"uploaded_pictures": "Uploaded Pictures",
+	"uploaded_picture": "Uploaded Picture",
 	"upload_new_picture": "Upload New Picture",
 	"change_password": "Change Password",
 	"confirm_password": "Confirm Password",

public/language/es/user.json

@@ -18,7 +18,7 @@
 
 	"change_picture": "Cambiar Foto",
 	"edit": "Editar",
-	"uploaded_pictures": "Fotos Cargadas",
+	"uploaded_picture": "Fotos Cargadas",
 	"upload_new_picture": "Cargar Nueva Foto",
 	"change_password": "Cambiar Contraseña",
 	"confirm_password": "Confirmar Contraseña",

public/language/fr/user.json

@@ -18,7 +18,7 @@
 
 	"change_picture": "changer d'image",
 	"edit": "editer",
-	"uploaded_pictures": "images uploadées",
+	"uploaded_picture": "images uploadées",
 	"upload_new_picture": "uploader une nouvelle image",
 	"change_password": "chnger le mot de passe",
 	"confirm_password": "confirmer le mot de passe",