provide admin page.

[leejaerim]

• have to do
  • [x] update each of item.
  • [x] can see the list of items.
  • [x] provide image url, if admin needs.

[leejaerim]

• [x] menu add button converts alert dialog

[leejaerim]

last one "provide image url, if admin needs." transfer another issue.

[leejaerim]

Transfer Issue