index2: drop EOL release box, mark footer links as external

Remove the end-of-life box (Borg 1.1 / 1.0 / 0.xx) from the install
section — only supported and upcoming series are listed now.

Add class="ext" to the footer Docs/Community/Contribute links so they
get the same ↗ external-link indicator as the rest of the page; these
were the only external links without one.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: ThomasWaldmann

index2.html

@@ -914,18 +914,6 @@ <h3>Borg 2.0<span class="badge testing">testing</span></h3>
         <li><a class="ext" href="https://github.com/borgbackup/borg/releases">downloads</a></li>
       </ul>
     </div>
-    <div class="feature">
-      <h3>Borg 1.1, 1.0, 0.xx<span class="badge eol">end of life</span></h3>
-      <div class="ver">1.1.18 / 1.0.13</div>
-      <div class="when">2022-06-05 / 2019-02-15</div>
-      <p>No longer supported — please use Borg 1.4.x or 1.2.x. The 0.xx development
-         series (2015–2016) led up to Borg 1.0.</p>
-      <ul class="mini-links">
-        <li><a href="/releases/borg-1.1.html">1.1 announcement</a></li>
-        <li><a class="ext" href="https://borgbackup.readthedocs.io/en/1.1-maint/">1.1 docs</a></li>
-        <li><a class="ext" href="https://borgbackup.readthedocs.io/en/1.0-maint/">1.0 docs</a></li>
-      </ul>
-    </div>
   </div>
   <p class="aside">Borg&rsquo;s future:
      <a class="ext" href="https://github.com/borgbackup/borg/milestones">milestones</a> ·
@@ -1141,9 +1129,9 @@ <h2>Trusted by sysadmins, hoarders and the merely paranoid.</h2>
     <a href="#support">Support</a>
     <a href="#services">Services</a>
     <a href="#fund">Fund</a>
-    <a href="https://borgbackup.readthedocs.io/">Docs</a>
-    <a href="https://github.com/borgbackup/community">Community</a>
-    <a href="https://github.com/borgbackup/borg">Contribute</a>
+    <a class="ext" href="https://borgbackup.readthedocs.io/">Docs</a>
+    <a class="ext" href="https://github.com/borgbackup/community">Community</a>
+    <a class="ext" href="https://github.com/borgbackup/borg">Contribute</a>
   </div>
   <p class="check">… and always check your backups!</p>
   <p class="legal">BorgBackup is free software, distributed under the BSD license.<br/>