Enhance plugin library search to all fields

Fixes #3741

core/ui/ControlPanel/Modals/AddPlugins.tid

@@ -76,7 +76,7 @@ $:/state/add-plugin-info/$(connectionTiddler)$/$(assetInfo)$
 </$button>
 </$reveal>
 <div class="tc-plugin-library-listing">
-<$list filter="[all[tiddlers+shadows]tag[$:/tags/RemoteAssetInfo]server-url{!!url}original-plugin-type[$type$]search{$:/temp/RemoteAssetSearch/$(currentTiddler)$}sort[description]]" variable="assetInfo">
+<$list filter="[all[tiddlers+shadows]tag[$:/tags/RemoteAssetInfo]server-url{!!url}original-plugin-type[$type$]search:author,description,original-title,readme,title{$:/temp/RemoteAssetSearch/$(currentTiddler)$}sort[description]]" variable="assetInfo">
 <<display-plugin-info "$type$">>
 </$list>
 </div>