Update all blog references

src/App.vue

@@ -115,7 +115,7 @@
                   </a>
                 </li>
                 <li class="pure-menu-item">
-                  <a href="https://blog.funkwhale.audio/timeline/1">
+                  <a href="https://blog.funkwhale.audio/">
                     <translate translate-context="Navigation/Link"
                       >Blog</translate
                     >

src/components/Navigation.vue

@@ -104,7 +104,7 @@
             </li>
             <li class="pure-menu-item">
               <a
-                href="https://blog.funkwhale.audio/timeline/1"
+                href="https://blog.funkwhale.audio/"
                 target="_blank"
                 class="pure-menu-link"
               >

src/views/Home.vue

@@ -338,11 +338,11 @@
           >
         </h3>
         <blog-widget
-          feed-url="https://blog.funkwhale.audio/@/funkwhale/atom.xml"
+          feed-url="https://blog.funkwhale.audio/feeds/all.atom.xml"
         ></blog-widget>
         <a
           class="pure-button pure-button-primary"
-          href="https://blog.funkwhale.audio/@/funkwhale/"
+          href="https://blog.funkwhale.audio/"
         >
           <translate translate-context="Content/Home/Link"
             >Visit our blog</translate
@@ -350,7 +350,7 @@
         </a>
         <a
           class="pure-button"
-          href="https://blog.funkwhale.audio/@/funkwhale/atom.xml"
+          href="https://blog.funkwhale.audio/feeds/all.atom.xml"
         >
           <i class="fa fa-feed"></i>&nbsp;
           <translate translate-context="Content/Home/Link">Atom feed</translate>