fix: hide repo related info while viewing or blaming a file

- Hide repository's description, website link, topics list, and statistics bar while viewing or blaming a file from the repo
- Resolves go-gitea#21406

Author: neel1996

templates/repo/home.tmpl

@@ -3,6 +3,7 @@
 	{{template "repo/header" .}}
 	<div class="ui container {{if .IsBlame}}fluid padded{{end}}">
 		{{template "base/alert" .}}
+		{{if and (not .IsViewFile) (not .IsBlame)}}
 		<div class="ui repo-description">
 			<div id="repo-desc">
 				{{$description := .Repository.DescriptionHTML $.Context}}
@@ -31,6 +32,7 @@
 		{{range .Topics}}<a class="ui repo-topic large label topic" href="{{AppSubUrl}}/explore/repos?q={{.Name}}&topic=1">{{.Name}}</a>{{end}}
 		{{if and .Permission.IsAdmin (not .Repository.IsArchived)}}<a id="manage_topic" class="muted">{{.locale.Tr "repo.topic.manage_topics"}}</a>{{end}}
 		</div>
+		{{end}}
 		{{if and .Permission.IsAdmin (not .Repository.IsArchived)}}
 		<div class="ui repo-topic-edit grid form" id="topic_edit" style="display:none">
 			<div class="fourteen wide column">

templates/repo/sub_menu.tmpl

@@ -1,3 +1,4 @@
+{{if and (not .IsViewFile) (not .IsBlame)}}
 <div class="ui segments repository-summary{{if and (.Permission.CanRead $.UnitTypeCode) (not .IsEmptyRepo) .LanguageStats}} repository-summary-language-stats{{end}} mt-2 mb-0">
 	<div class="ui segment sub-menu repository-menu">
 		<div class="ui two horizontal center link list">
@@ -44,3 +45,4 @@
 	</a>
 	{{end}}
 </div>
+{{end}}