Merge pull request #683 from ArthurHoaro/plugins/w3ccompliance

Plugins W3C compliance

plugins/archiveorg/archiveorg.html

@@ -1 +1 @@
-<span><a href="https://web.archive.org/web/%s"><img class="linklist-plugin-icon" src="plugins/archiveorg/internetarchive.png" title="View on archive.org" /></a></span>
+<span><a href="https://web.archive.org/web/%s"><img class="linklist-plugin-icon" src="plugins/archiveorg/internetarchive.png" title="View on archive.org" alt="archive.org" /></a></span>

plugins/qrcode/qrcode.html

@@ -1,5 +1,5 @@
 <div class="linkqrcode">
     <a href="http://qrfree.kaywa.com/?l=1&amp;s=8&amp;d=%s" onclick="showQrCode(this); return false;" class="qrcode" data-permalink="%s">
-        <img src="%s/qrcode/qrcode.png" class="linklist-plugin-icon" title="QR-Code">
+        <img src="%s/qrcode/qrcode.png" class="linklist-plugin-icon" title="QR-Code" alt="QRCode">
     </a>
 </div>

plugins/readityourself/readityourself.html

@@ -1 +1 @@
-<span><a href="%s?url=%s"><img class="linklist-plugin-icon" src="%s/readityourself/book-open.png" title="Read with Readityourself" /></a></span>
+<span><a href="%s?url=%s"><img class="linklist-plugin-icon" src="%s/readityourself/book-open.png" title="Read with Readityourself" alt="readityourself" /></a></span>

plugins/wallabag/wallabag.html

@@ -1 +1 @@
-<span><a href="%s%s" target="_blank"><img class="linklist-plugin-icon" src="%s/wallabag/wallabag.png" title="Save to wallabag" /></a></span>
+<span><a href="%s%s" target="_blank"><img class="linklist-plugin-icon" src="%s/wallabag/wallabag.png" title="Save to wallabag" alt="wallabag" /></a></span>