set defaults for unset variables, trim trailing spaces

Dmitry Verkhoturov

20.10.2018 e9c7cc5c2fdc70603571516137d85bfaefbd4390

 layouts/partials/bio.html

@@ -1,3 +1,5 @@
{{ if .Site.Params.content.bio }}
<div class="split-bio">
  <p>{{ .Site.Params.content.bio | markdownify }}</p>
</div>
{{ end }}