Add missing translation strings (fixes #1430)

gui/assets/lang/lang-en.json

@@ -71,6 +71,7 @@
    "Local Discovery": "Local Discovery",
    "Local State": "Local State",
    "Maximum Age": "Maximum Age",
+   "Move to top of queue": "Move to top of queue",
    "Multi level wildcard (matches multiple directory levels)": "Multi level wildcard (matches multiple directory levels)",
    "Never": "Never",
    "New Device": "New Device",
@@ -93,6 +94,7 @@
    "Quick guide to supported patterns": "Quick guide to supported patterns",
    "RAM Utilization": "RAM Utilization",
    "Rescan": "Rescan",
+   "Rescan All": "Rescan All",
    "Rescan Interval": "Rescan Interval",
    "Restart": "Restart",
    "Restart Needed": "Restart Needed",