web/settings/advanced: improve settings management buttons

also removed duplicate localization strings

web/i18n/en/button.json

@@ -12,5 +12,6 @@
     "continue": "continue",
     "star": "star",
     "follow": "follow",
-    "save": "save"
+    "save": "save",
+    "export": "export"
 }

web/i18n/en/settings.json

@@ -110,9 +110,6 @@
     "advanced.debug.description": "gives you access to a page with various info that can be useful for debugging.",
 
     "advanced.data": "settings data",
-    "advanced.reset": "reset all settings",
-    "advanced.import": "import",
-    "advanced.export": "export",
 
     "processing.override": "default instance override",
     "processing.override.title": "use the instance-provided processing server",