Small formatting fixes on gmi site

src/gmi/tpl/index.gmi

@@ -48,8 +48,6 @@ Feel free to hmu on any of these if you'd like to get in touch.
 
 => https://news.cryptic.io/ Cryptic News aggregates interesting blogs.
 
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-
 I'm not affiliated with these, but they're worth listing.
 
 => https://search.marginalia.nu/ Marginalia reminds me of the old internet.

src/gmi/tpl/posts/index.gmi

@@ -23,7 +23,7 @@ much as the quality!
 {{ if $getPostsRes.HasMore -}}
 => {{ BlogURL "posts" }}/?page={{ .Add $page 1 }} Next page
 {{ end }}
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+================================================================================
 
 => {{ BlogURL "feed.xml" }} Subscribe to the RSS feed for updates
 

src/gmi/tpl/posts/post.gmi

@@ -9,15 +9,14 @@
 
 {{ .PostBody $post }}
 
---------------------------------------------------------------------------------
+================================================================================
 
-Published {{ $post.PublishedAt.Format "2006-01-02" }}
+Published {{ $post.PublishedAt.Format "2006-01-02" }} by mediocregopher
 
 {{- if $post.Series }}
-
-This post is part of a series!
-
 {{ $seriesNextPrev := .GetPostSeriesNextPrevious $post -}}
+{{ if or $seriesNextPrev.Next $seriesNextPrev.Previous }}
+This post is part of a series!
 
 {{ if $seriesNextPrev.Next -}}
 => {{ BlogURL "posts" }}/{{ $seriesNextPrev.Next.ID }}.gmi Next in the series: {{ $seriesNextPrev.Next.Title }}
@@ -27,6 +26,7 @@ This post is part of a series!
 => {{ BlogURL "posts" }}/{{ $seriesNextPrev.Previous.ID }}.gmi Prevous in the series: {{ $seriesNextPrev.Previous.Title }}
 {{ end -}}
 
+{{ end -}}
 {{ end }}
 => {{ BlogURL "posts/" }} Browse all posts