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/api/v1/repo/repo.go

@@ -126,6 +126,7 @@ func Search(ctx *context.APIContext) {
 	//     "$ref": "#/responses/validationError"
 
 	opts := &models.SearchRepoOptions{
+		Actor:              ctx.User,
 		Keyword:            strings.Trim(ctx.Query("q"), " "),
 		OwnerID:            ctx.QueryInt64("uid"),
 		PriorityOwnerID:    ctx.QueryInt64("priority_owner_id"),
@@ -135,8 +136,6 @@ func Search(ctx *context.APIContext) {
 		Collaborate:        util.OptionalBoolNone,
 		Private:            ctx.IsSigned && (ctx.Query("private") == "" || ctx.QueryBool("private")),
 		Template:           util.OptionalBoolNone,
-		UserIsAdmin:        ctx.IsUserSiteAdmin(),
-		UserID:             ctx.Data["SignedUserID"].(int64),
 		StarredByID:        ctx.QueryInt64("starredBy"),
 		IncludeDescription: ctx.QueryBool("includeDesc"),
 	}