complete W8C-3
fix bug (send a POST request to a GET_required function)
complete msgbox
add shops/serializers.py
Modify number input checking function

index.html:
"keydown #createItemPrice": "checkKeyNumber"
Merge branch 'feature-W8C-3' into develop
complete W9B-2,W9B-3
add function: accounts.verifyEmail
add group (in database):Lv1
add four groups: Lv0, Lv1, Lv2, Lv3.
Lv0 means the user who has no any verification
Lv1 means complete e-mail verification
Lv2 means complete phone verification
Lv3 means complete namecard verification

add three boolean field: is_emailverified, is_phoneverified,
is_namecardverified to User model.

When a user register a new account, the system will assign him/she to
Lv0 group automatically

新增群組Lv0~Lv3
Lv0表示使用者未完成任何認證
add comments in accounts/views

在accounts/views裡新增注解
temp commit
temp commit2
Merge branch 'W8D' into develop
Merge branch 'squall-feature-W8C-3' into develop

Conflicts:
	djangotest/templates/index.html
Merge branch 'feature-W9B-2' into develop