Restricted users (#4334): initial implementation

* Add User.IsRestricted & UI to edit it

* Pass user object instead of user id to places where IsRestricted flag matters

* Restricted users: maintain access rows for all referenced repos (incl public)

* Take logged in user & IsRestricted flag into account in org/repo listings, searches and accesses

* Add basic repo access tests for restricted users

Signed-off-by: Manush Dodunekov <manush@stendahls.se>

routers/org/home.go

@@ -80,8 +80,7 @@ func Home(ctx *context.Context) {
 		OwnerID:            org.ID,
 		OrderBy:            orderBy,
 		Private:            ctx.IsSigned,
-		UserIsAdmin:        ctx.IsUserSiteAdmin(),
-		UserID:             ctx.Data["SignedUserID"].(int64),
+		Actor:              ctx.User,
 		Page:               page,
 		IsProfile:          true,
 		PageSize:           setting.UI.User.RepoPagingNum,