🌐 Preview changes button, and Add section title

src/assets/locales/en.json

@@ -112,6 +112,7 @@
     "location-local-label": "Apply Locally",
     "location-disk-label": "Write Changes to Config File",
     "save-button": "Save Changes",
+    "preview-button": "Preview Changes",
     "valid-label": "Config is Valid",
     "status-success-msg": "Task Complete",
     "status-fail-msg": "Task Failed",
@@ -218,6 +219,7 @@
     },
     "edit-section": {
       "edit-section-title": "Edit Section",
+      "add-section-title": "Add New Section",
       "edit-tooltip": "Click to Edit, or right-click for more options",
       "remove-confirm": "Are you sure you want to remove this section? This action can be undone later."
     },