[chore] Refactor HTML templates and CSS (#2480)

* [chore] Refactor HTML templates and CSS

* eslint

* ignore "Local"

* rss tests

* fiddle with OG just a tiny bit

* dick around with polls a bit more so SR stops saying "clickable"

* remove break

* oh lord

* don't lazy load avatar

* fix ogmeta tests

* clean up some cruft

* catch remaining calls to c.HTML

* fix error rendering + stack overflow in tag

* allow templating attributes

* fix indent

* set aria-hidden on status complementary content, since it's already present in the label anyway

* tidy up templating calls a little

* try to make styling a bit more consistent + readable

* fix up some remaining CSS issues

* fix up reports

web/template/error.tmpl

@@ -17,16 +17,16 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */ -}}
 
-{{ template "header.tmpl" .}}
+{{- with . }}
 <main>
-	<section class="error">
-		<h1>An error occured:</h1>
-		<pre>{{.error}}</pre>
-		{{if .requestID}}
-		<div>
-			<span>Request ID:</span> <code>{{.requestID}}</code>
-		</div>
-		{{end}}
-	</section>
+    <section class="error">
+        <h1>An error occured:</h1>
+        <pre>{{- .error -}}</pre>
+        {{- if .requestID }}
+        <div>
+            <span>Request ID:</span> <code>{{- .requestID -}}</code>
+        </div>
+        {{- end }}
+    </section>
 </main>
-{{ template "footer.tmpl" .}}
+{{- end }}