feat: combine post and comment uploads into a single file

frontend/src/pages/Upload.tsx

@@ -8,20 +8,18 @@ const styles = StatsStyling;
 
 const UploadPage = () => {
   let postFile: File | undefined;
-  let commentFile: File | undefined;
   let topicBucketFile: File | undefined;
   const [returnMessage, setReturnMessage] = useState('')
   const navigate = useNavigate()
 
   const uploadFiles = async () => {
-    if (!postFile || !commentFile || !topicBucketFile) {
+    if (!postFile || !topicBucketFile) {
       alert('Please upload all files before uploading.')
       return
     }
 
     const formData = new FormData()
     formData.append('posts', postFile)
-    formData.append('comments', commentFile)
     formData.append('topics', topicBucketFile)
 
     try {
@@ -44,10 +42,6 @@ const UploadPage = () => {
         <h2 style={{color: "black" }}>Posts File</h2>
         <input style={{color: "black" }} type="file" onChange={(e) => postFile = e.target.files?.[0]}></input>
       </div>
-      <div style={{ ...styles.card }}>
-        <h2 style={{color: "black" }}>Comments File</h2>
-        <input style={{color: "black" }} type="file" onChange={(e) => commentFile = e.target.files?.[0]}></input>
-      </div>
       <div style={{ ...styles.card }}>
         <h2 style={{color: "black" }}>Topic Buckets File</h2>
         <input style={{color: "black" }} type="file" onChange={(e) => topicBucketFile = e.target.files?.[0]}></input>