[VoiceOver] WPCom Log In Flow concerns

Email | Password --------|------- <img src="https://user-images.githubusercontent.com/198826/70750787-56107480-1cec-11ea-98bf-671894eb891c.png" width="320"> | <img src="https://user-images.githubusercontent.com/198826/70750995-bb646580-1cec-11ea-81ac-34b354f5d352.png" width="320">

• [ ] The email address can have a label
• [ ] The password can have a label
• [ ] The 1Password button is not read right. Maybe we can change it so it's read like “one password” by VoiceOver.
• [ ] The Show Password button is just spoken as “Button”.