Authentication service

1. Register

1.1. Email

1.2. Password

1.3. Captcha

1.4. Validation

1.4.1. Wrong email pattern

1.4.2. Weak password

1.4.3. Not matched passwords

1.5. Redirect

1.5.1. Notify to read email

1.5.1.1. Registration confirmation

1.5.1.1.1. Confirmation code

1.5.1.1.2. Validation

1.5.1.1.3. Redirect

1.5.2. Registration is created

2. Login

2.1. Email

2.2. Password

2.3. Validation

2.3.1. Not existed

2.3.2. Wrong password

2.3.3. Not confirmed

2.3.4. Locked

2.4. Redirect

2.4.1. Homepage

2.4.2. Redirect url

2.5. Access token

3. Forgot password

3.1. Email

3.2. Validation

3.2.1. Not existed

3.2.2. Timeout

3.3. Reset new password

3.3.1. New password

3.3.2. Validation

3.3.2.1. Weak password

3.3.2.2. Not matched passwords

3.3.3. Redirect

3.3.3.1. Login

4. OAuth2

4.1. Facebook

4.2. Google

4.3. Redirect

4.3.1. Homepage

4.3.2. Redirect url

4.4. Access token