[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/frontend.tmpl

@@ -17,9 +17,8 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */ -}}
 
-{{ template "header.tmpl" .}}
+{{- with . }}
 <main class="lightgray">
-	<div id="root">
-	</div>
+    <div id="root"></div>
 </main>
-{{ template "footer.tmpl" .}}
+{{- end }}