Include names of "Editors" (if provided) and no "Authors" provided in Zotero json data for a given entry. (#275)

Prefix Editor(s) name(s) with "Edited by: " in Bibliography entry.

Author: MattHeffron

Diff for: layouts/shortcodes/bibTable.html

@@ -182,8 +182,7 @@
         <tr>
           {{ $itemID := (cond (gt (len .id) 0) (replace .id `/` `_`) `_0`) }}
           <td><div class="bibTitle">{{ if .url }}<a href="{{ .url }}">{{ .title }}</a>{{ else }}{{ .title }}{{ end }}</div>
-          {{ if .author }}<div class="authors">  
-            {{ range $na, $au := .author }}{{ if $na }}; {{ end }}{{ if $au.literal }}{{ $au.literal }}{{ else if and $au.family $au.given }}{{ $au.family }}, {{ $au.given }}{{ else }}{{ $au.family }}{{ $au.given }}{{ end }}{{ end }}
+          {{ if or .author .editor }}<div class="authors">{{ if not .author }}<i>Edited by: </i>{{ end }}{{ range $naE, $auEd := or .author .editor }}{{ if $naE }}; {{ end }}{{ if $auEd.literal }}{{ $auEd.literal }}{{ else if and $auEd.family $auEd.given }}{{ $auEd.family }}, {{ $auEd.given }}{{ else }}{{ $auEd.family }}{{ $auEd.given }}{{ end }}{{ end }}
           </div>{{ end }}
           {{ if .abstract }}<button type="button" class="abstractExpander left" id="A{{$itemID}}">AAA</button>{{ end }}
           {{ if and false .note }}