Add a button to refresh the list of updates

central_frontend/src/routes/OTARoute.tsx

@@ -1,6 +1,7 @@
 import DeleteIcon from "@mui/icons-material/Delete";
 import DownloadIcon from "@mui/icons-material/Download";
 import FileUploadIcon from "@mui/icons-material/FileUpload";
+import RefreshIcon from "@mui/icons-material/Refresh";
 import {
   IconButton,
   Paper,
@@ -65,13 +66,18 @@ function _OTARoute(p: { platforms: Array<string> }): React.ReactElement {
     <SolarEnergyRouteContainer
       label="OTA"
       actions={
-        <>
+        <span>
+          <Tooltip title="Refresh the list of updates">
+            <IconButton onClick={reload}>
+              <RefreshIcon />
+            </IconButton>
+          </Tooltip>
           <Tooltip title="Upload a new update">
             <IconButton onClick={() => setShowUploadDialog(true)}>
               <FileUploadIcon />
             </IconButton>
           </Tooltip>
-        </>
+        </span>
       }
     >
       {showUploadDialog && (