Bug#1032293: debian-timeline: validation errors in timeline.debian.net

Laura Arjona Reina <[email protected]>
Newsgroups gmane.linux.debian.devel.publicity
Message-ID <6fbf9f87-b1ab-1558-4079-b8b84fd2f87c__16660.4597632372$1677828271$gmane$org@debian.org>
Package: debian-timeline
Version: 45
Severity: normal

I have passed the w3c validator
(https://validator.w3.org/nu/?doc=https%3A%2F%2Ftimeline.debian.net%2F) 
to timeline.debian.net (which is built based on git master) and found 
the following results:

      Warning: Consider adding a lang attribute to the html start tag to 
declare the language of this document.

     From line 1, column 1; to line 1, column 6

     <html>↩<head

     For further guidance, consult Declaring the overall language of a 
page and Choosing language tags.

     If the HTML checker has misidentified the language of this 
document, please file an issue report or send e-mail to report the problem.

---

     Error: The character encoding was not declared. Proceeding using
windows-1252.

     https://timeline.debian.net/
---

     Error: Start tag seen without seeing a doctype first. Expected 
<!DOCTYPE
html>.

     From line 1, column 1; to line 1, column 6

     <html>↩<head
---

     Info: Trailing slash on void elements has no effect and interacts 
badly with unquoted attribute values.

     From line 4, column 1; to line 4, column 74

     t</title>↩<link rel="stylesheet" href="media/debian-timeline.css"
type="text/css" />↩<scri

---
     Warning: The type attribute is unnecessary for JavaScript resources.

     From line 5, column 1; to line 5, column 31

     t/css" />↩<script type="text/javascript">↩ Time

---
     Warning: The type attribute is unnecessary for JavaScript resources.

     From line 10, column 1; to line 10, column 64

     </script>↩<script src="media/jquery/jquery.min.js"
type="text/javascript"></scri

---
     Warning: The type attribute is unnecessary for JavaScript resources.

     From line 11, column 1; to line 11, column 71

     </script>↩<script src="media/timeline_js/timeline-api.js"
type="text/javascript"></scri

---
     Warning: The type attribute is unnecessary for JavaScript resources.

     From line 12, column 1; to line 12, column 62

     </script>↩<script src="media/debian-timeline.js"
type="text/javascript"></scri

---
     Info: Trailing slash on void elements has no effect and interacts 
badly with unquoted attribute values.

     From line 25, column 296; to line 25, column 300

     itory</a>.<br/>↩    <p>T
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