Make diff view full width again (#24598)

Regression of #24459 , [the related
line](https://github.com/go-gitea/gitea/pull/24459/files#diff-f255004de8d715ff40852710390429bf2a06e7e33a4e3f8ad568af636557ac71L8)

The PR file diff view needs to be full-screen width.

templates/repo/diff/box.tmpl

@@ -1,6 +1,6 @@
 {{if .DiffNotAvailable}}
-	<div class="diff-detail-box diff-box sticky">
-		<div>
+	<div>
+		<div class="diff-detail-box diff-box sticky">
 			<div class="ui right">
 				{{template "repo/diff/whitespace_dropdown" .}}
 				{{template "repo/diff/options_dropdown" .}}

templates/repo/diff/compare.tmpl

@@ -1,8 +1,8 @@
 {{template "base/head" .}}
 <div role="main" aria-label="{{.Title}}" class="page-content repository diff {{if .PageIsComparePull}}compare pull{{end}}">
 	{{template "repo/header" .}}
-	<div class="ui container fluid padded">
-
+	{{$showDiffBox := false}}
+	<div class="ui container">
 	<h2 class="ui header">
 		{{if and $.PageIsComparePull $.IsSigned (not .Repository.IsArchived)}}
 			{{.locale.Tr "repo.pulls.compare_changes"}}
@@ -34,11 +34,6 @@
 		{{- if eq $.HeadRepo.OwnerName .RootRepo.OwnerName -}}
 			{{- $HeadCompareName = printf "%s/%s" $.HeadRepo.OwnerName $.HeadRepo.Name -}}
 		{{- end -}}
-		{{- if .OwnForkRepo -}}
-			{{- if eq $.OwnForkRepo.OwnerName .RootRepo.OwnerName -}}
-				{{- $OwnForkRepoCompareName = printf "%s/%s" $.OwnForkRepo.OwnerName $.OwnForkRepo.Name -}}
-			{{- end -}}
-		{{- end -}}
 	{{- end -}}
 	<div class="ui segment choose branch">
 		<a href="{{$.HeadRepo.Link}}/compare/{{PathEscapeSegments $.HeadBranch}}{{$.CompareSeparator}}{{if not $.PullRequestCtx.SameRepo}}{{PathEscape $.BaseName}}/{{PathEscape $.Repository.Name}}:{{end}}{{PathEscapeSegments $.BaseBranch}}" title="{{.locale.Tr "repo.pulls.switch_head_and_base"}}">{{svg "octicon-git-compare"}}</a>
@@ -203,14 +198,15 @@
 						<span class="index">#{{.PullRequest.Issue.Index}}</span>
 					</h1>
 				</div>
-				<div class="four wide right middle aligned column">
+				<div class="four wide column middle aligned text right">
 				{{- if .PullRequest.HasMerged -}}
 				<a href="{{Escape $.RepoLink}}/pulls/{{.PullRequest.Issue.Index}}" class="ui button purple show-form">{{svg "octicon-git-merge" 16}} {{.locale.Tr "repo.pulls.view"}}</a>
 				{{else if .Issue.IsClosed}}
 				<a href="{{Escape $.RepoLink}}/pulls/{{.PullRequest.Issue.Index}}" class="ui button red show-form">{{svg "octicon-issue-closed" 16}} {{.locale.Tr "repo.pulls.view"}}</a>
 				{{else}}
 				<a href="{{Escape $.RepoLink}}/pulls/{{.PullRequest.Issue.Index}}" class="ui button green show-form">{{svg "octicon-git-pull-request" 16}} {{.locale.Tr "repo.pulls.view"}}</a>
-				{{end}}</div>
+				{{end}}
+				</div>
 			</div>
 		{{else}}
 			{{if and $.IsSigned (not .Repository.IsArchived)}}
@@ -231,13 +227,20 @@
 					{{template "repo/issue/new_form" .}}
 				</div>
 			{{end}}
-			{{template "repo/commits_table" .}}
-			{{template "repo/diff/box" .}}
+			{{$showDiffBox = true}}
 		{{end}}
 	{{else}}
+		{{$showDiffBox = true}}
+	{{end}}
+	</div>
+
+	{{if $showDiffBox}}
+	<div class="ui container">
 		{{template "repo/commits_table" .}}
+	</div>
+	<div class="ui container fluid padded">
 		{{template "repo/diff/box" .}}
-	{{end}}
 	</div>
+	{{end}}
 </div>
 {{template "base/footer" .}}

templates/repo/pulls/files.tmpl

@@ -5,7 +5,7 @@
 
 <div role="main" aria-label="{{.Title}}" class="page-content repository view issue pull files diff">
 	{{template "repo/header" .}}
-	<div class="ui container">
+	<div class="ui container fluid padded">
 		{{template "repo/issue/view_title" .}}
 		{{template "repo/pulls/tab_menu" .}}
 		{{template "repo/diff/box" .}}