Remove global site url (#8343)

* remove global site url

* missed one

* revert mysterious change

app/oauth.go

@@ -527,7 +527,7 @@ func (a *App) CompleteSwitchWithOAuth(service string, userData io.ReadCloser, em
 	}
 
 	a.Go(func() {
-		if err := a.SendSignInChangeEmail(user.Email, strings.Title(service)+" SSO", user.Locale, utils.GetSiteURL()); err != nil {
+		if err := a.SendSignInChangeEmail(user.Email, strings.Title(service)+" SSO", user.Locale, a.GetSiteURL()); err != nil {
 			l4g.Error(err.Error())
 		}
 	})
@@ -600,7 +600,7 @@ func (a *App) GetAuthorizationCode(w http.ResponseWriter, r *http.Request, servi
 	props["token"] = stateToken.Token
 	state := b64.StdEncoding.EncodeToString([]byte(model.MapToJson(props)))
 
-	redirectUri := utils.GetSiteURL() + "/signup/" + service + "/complete"
+	redirectUri := a.GetSiteURL() + "/signup/" + service + "/complete"
 
 	authUrl := endpoint + "?response_type=code&client_id=" + clientId + "&redirect_uri=" + url.QueryEscape(redirectUri) + "&state=" + url.QueryEscape(state)
 
@@ -736,7 +736,7 @@ func (a *App) SwitchEmailToOAuth(w http.ResponseWriter, r *http.Request, email,
 	stateProps["email"] = email
 
 	if service == model.USER_AUTH_SERVICE_SAML {
-		return utils.GetSiteURL() + "/login/sso/saml?action=" + model.OAUTH_ACTION_EMAIL_TO_SSO + "&email=" + utils.UrlEncode(email), nil
+		return a.GetSiteURL() + "/login/sso/saml?action=" + model.OAUTH_ACTION_EMAIL_TO_SSO + "&email=" + utils.UrlEncode(email), nil
 	} else {
 		if authUrl, err := a.GetAuthorizationCode(w, r, service, stateProps, ""); err != nil {
 			return "", err
@@ -768,7 +768,7 @@ func (a *App) SwitchOAuthToEmail(email, password, requesterId string) (string, *
 	T := utils.GetUserTranslations(user.Locale)
 
 	a.Go(func() {
-		if err := a.SendSignInChangeEmail(user.Email, T("api.templates.signin_change_email.body.method_email"), user.Locale, utils.GetSiteURL()); err != nil {
+		if err := a.SendSignInChangeEmail(user.Email, T("api.templates.signin_change_email.body.method_email"), user.Locale, a.GetSiteURL()); err != nil {
 			l4g.Error(err.Error())
 		}
 	})