tweaks part 7 exercises

Author: mluukkai

src/components/InfoBanner3.js

@@ -55,11 +55,8 @@ const InfoBanner = ({ visible, onHide }) => {
               <li><i>Webpack replaced with esbuild</i></li>
               <li><i>Error boundaries and keeping the frontend and backend in a single repository covered</i></li>
               <li><i>Some of the hook exercises have changed</i></li>
-              <li><i>Two new exercises for the blog list</i></li>
+              <li><i>Some new exercises for the blog list</i></li>
             </ul>
-          </div>
-           <div style={{ marginBottom: 10 }}>
-            There may still be some minor changes coming to the blog list exercise set in the next few days.
           </div>
           <div>
             The old content is still found <a style={linkStyle} href="https://github.com/fullstack-hy2020/fullstack-hy2020.github.io/tree/7599b17c02b056fcad4f12d8708f0e07980b7564/src/content/7/en">here</a>. 

src/content/7/en/part7d.md

@@ -177,7 +177,7 @@ You can access this view by clicking the name of the user in the view that lists
 
 Implement the functionality for commenting the blog posts:
 
-![browser blogs showing list of comments for a blog](../../images/7/48.png)
+![browser blogs showing list of comments for a blog](../../images/7/u8.png)
 
 Comments should be anonymous, meaning that they are not associated with the user who left the comment.
 
@@ -189,7 +189,7 @@ An appropriate mechanism for adding comments to a blog post would be an HTTP POS
 
 Extend your application so that users can add comments to blog posts from the frontend:
 
-![browser showing comments added via frontend](../../images/7/49.png)
+![browser showing comments added via frontend](../../images/7/u9.png)
 
 #### 7.20: Styling