Add import string.

en.json

@@ -75,7 +75,8 @@
                     "overrides": "Theme Overrides",
                     "reset_overrides": "Reset overrides.",
                     "export_clipboard": "Export to clipboard.",
-                    "import_clipboard": "Import from clipboard."
+                    "import_clipboard": "Import from clipboard.",
+                    "import_manual": "Import manually."
                 },
                 "logOut": "Log Out"
             }