Only show vertical bar if necessary in post-meta (#193)

fixes unnecessary "|" shown when post-meta is empty but translations are available

layouts/_default/single.html

@@ -12,7 +12,8 @@
     {{- if not (.Param "hideMeta") }}
     <div class="post-meta">
       {{- partial "post_meta.html" . -}}
-      {{- if .IsTranslated -}}&nbsp;|&nbsp;
+      {{- if .IsTranslated -}}
+      {{- if or .Params.author $.Site.Params.author $.Site.Params.ShowReadingTime (not .Date.IsZero) }}&nbsp;|&nbsp;{{- end -}}
       <ul class="i18n_list">
         {{- i18n "translations" | default "Translations"}}:
         {{- range .Translations }}