Fix whitespace rendering in diff (#13415)

- Introduce new .code-inner class that sets the CSS attributes on
rendered code lines like view,blame and diff.
- Rename .wrap class to .word-break to reflect what it actually does
- Remove .raw which was only used on webhook page
- Set white-space: pre-wrap except on blame where it can break the
layout

Fixes: https://github.com/go-gitea/gitea/issues/13406

templates/user/profile.tmpl

@@ -13,11 +13,11 @@
 							<img src="{{.Owner.SizedRelAvatarLink 290}}" title="{{.Owner.Name}}" height="290" width="290"/>
 						</span>
 					{{end}}
-					<div class="content wrap">
+					<div class="content word-break">
 						{{if .Owner.FullName}}<span class="header text center">{{.Owner.FullName}}</span>{{end}}
 						<span class="username text center">{{.Owner.Name}}</span>
 					</div>
-					<div class="extra content wrap">
+					<div class="extra content word-break">
 						<ul class="text black">
 							{{if .Owner.Location}}
 								<li>{{svg "octicon-location"}} {{.Owner.Location}}</li>