Added new layout file for redirecting

i18n/de.toml

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+redirect_message = "Weiterleitung zu {{ .URL }} in {{ .Seconds }} Sekunden..."
+click_here_redirect = "Hier klicken, falls Sie nicht weitergeleitet werden"

i18n/en.toml

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+redirect_message = "Redirecting to {{ .URL }} in {{ .Seconds }} seconds..."
+click_here_redirect = "Click here if you are not redirected"

i18n/ru.toml

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+redirect_message = "Перенаправление на {{ .URL }} через {{ .Seconds }} секунд..."
+click_here_redirect = "Нажмите здесь, если перенаправление не произошло"

layouts/_default/redirect.html

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+{{ define "content" }}
+<div class="container">
+  <article>
+    <h1>{{ .Title }}</h1>
+
+    <p>
+      {{ i18n "redirect_message" (dict
+          "Seconds" (.Params.redirect_delay | default 3)
+          "URL" .Params.redirect_url
+      ) }}
+    </p>
+
+    <p>
+      <a href="{{ .Params.redirect_url }}" rel="noopener noreferrer">
+        {{ i18n "click_here_redirect" }}
+      </a>
+    </p>
+  </article>
+</div>
+
+<meta http-equiv="refresh" content="{{ .Params.redirect_delay | default 3 }}; url={{ .Params.redirect_url }}">
+{{ end }}