Display "contents" tab for plugins that lack any information tabs

Fixes #2841

core/language/en-GB/ControlPanel.multids

@@ -72,7 +72,6 @@ Plugins/Installed/Hint: Currently installed plugins:
 Plugins/Languages/Caption: Languages
 Plugins/Languages/Hint: Language pack plugins
 Plugins/NoInfoFound/Hint: No ''"<$text text=<<currentTab>>/>"'' found
-Plugins/NoInformation/Hint: No information provided
 Plugins/NotInstalled/Hint: This plugin is not currently installed
 Plugins/OpenPluginLibrary: open plugin library
 Plugins/ClosePluginLibrary: close plugin library

core/ui/Components/plugin-info.tid

@@ -78,14 +78,9 @@ $:/config/Plugins/Disabled/$(currentTiddler)$
 </$reveal>
 </div>
 </$list>
-<$reveal type="nomatch" text="" state="!!list">
 <$set name="tabsList" filter="[<currentTiddler>list[]] contents">
-<$macrocall $name="tabs" state=<<tabs-state-macro>> tabsList=<<tabsList>> default="readme" template="$:/core/ui/PluginInfo"/>
+<$macrocall $name="tabs" state=<<tabs-state-macro>> tabsList=<<tabsList>> default={{{ [enlist<tabsList>] }}} template="$:/core/ui/PluginInfo"/>
 </$set>
-</$reveal>
-<$reveal type="match" text="" state="!!list">
-<<lingo NoInformation/Hint>>
-</$reveal>
 </div>
 </div>
 </$reveal>