appview/models: move db.Signup into models

Signed-off-by: oppiliappan <[e-mail]>

appview/db/signup.go

···
 package db
 
-import "time"
+import (
+	"tangled.org/core/appview/models"
+)
 
-type InflightSignup struct {
-	Id         int64
-	Email      string
-	InviteCode string
-	Created    time.Time
-}
-
-func AddInflightSignup(e Execer, signup InflightSignup) error {
+func AddInflightSignup(e Execer, signup models.InflightSignup) error {
 	query := `insert into signups_inflight (email, invite_code) values (?, ?)`
 	_, err := e.Exec(query, signup.Email, signup.InviteCode)
 	return err

appview/models/signup.go

···
+package models
+
+import "time"
+
+type InflightSignup struct {
+	Id         int64
+	Email      string
+	InviteCode string
+	Created    time.Time
+}

appview/signup/signup.go

···
 			s.pages.Notice(w, noticeId, "Failed to send email.")
 			return
 		}
-		err = db.AddInflightSignup(s.db, db.InflightSignup{
+		err = db.AddInflightSignup(s.db, models.InflightSignup{
 			Email:      emailId,
 			InviteCode: code,
 		})