Move mirror to a standalone package from models (#7486)

* move mirror to a standalone package

* fix mirror address in template

* fix tests

* fix lint

* fix comment

* fix tests

* fix tests

* fix vendor

* fix fmt

* fix lint

* remove wrong file submitted

* fix conflict

* remove unrelated changes

* fix go mod

* fix tests

* clean go mod

* make vendor work

* make vendor work

* fix tests

* remove duplicated test

templates/repo/header.tmpl

@@ -13,7 +13,7 @@
 				<a href="{{$.RepoLink}}">{{.Name}}</a>
 				{{if and .RelAvatarLink .IsPrivate}}<i class="mega-octicon octicon-lock"></i>{{end}}
 				{{if .IsArchived}}<i class="archive icon archived-icon"></i>{{end}}
-				{{if .IsMirror}}<div class="fork-flag">{{$.i18n.Tr "repo.mirror_from"}} <a target="_blank" rel="noopener noreferrer" href="{{$.Mirror.Address}}">{{$.Mirror.Address}}</a></div>{{end}}
+				{{if .IsMirror}}<div class="fork-flag">{{$.i18n.Tr "repo.mirror_from"}} <a target="_blank" rel="noopener noreferrer" href="{{MirrorAddress $.Mirror}}">{{MirrorAddress $.Mirror}}</a></div>{{end}}
 				{{if .IsFork}}<div class="fork-flag">{{$.i18n.Tr "repo.forked_from"}} <a href="{{.BaseRepo.Link}}">{{SubStr .BaseRepo.RelLink 1 -1}}</a></div>{{end}}
 			</div>
 			<div class="repo-buttons">

templates/repo/settings/options.tmpl

@@ -80,7 +80,7 @@
 					</div>
 					<div class="field {{if .Err_MirrorAddress}}error{{end}}">
 						<label for="mirror_address">{{.i18n.Tr "repo.mirror_address"}}</label>
-						<input id="mirror_address" name="mirror_address" value="{{.Mirror.AddressNoCredentials}}" required>
+						<input id="mirror_address" name="mirror_address" value="{{MirrorFullAddress .Mirror}}" required>
 						<p class="help">{{.i18n.Tr "repo.mirror_address_desc"}}</p>
 					</div>
 					<div class="ui accordion optional field">