Support hiding TOS

Merge pull request #536 from wordpress-mobile/issue/535-terms-of-service

Allow host apps to remove the link to the WP.com Terms Of Service

Allow host apps to insert custom UI instead of WP.com account creation flow

1.31.0-beta.3

Allow host apps to reject signups or WP.com

1.31.0-beta.2

Updates to WordPressauthenticatorDelegate to allow host apps to respo…

1.31.0-beta.1

Add a navigation command to navigate one step back

1.30.0

Merge pull request #528 from wordpress-mobile/merge/1.30.0-into-trunk

Merge 1.30.0 into trunk

1.30.0-beta.2

Breaking changes to the API of WordPressAuthenticatorDelegate

1.30.0-beta.1

• Add parameters to configuration and styles
• Add properties to WordPressComSiteInfo

1.29.0

Login Prologue button view: make constraints optional.

1.29.0-beta.1

Merge pull request #511 from wordpress-mobile/fix/prologue_button_con…

1.28.0

• Removes a green background color from a stack view.
• Wire up outlet to info text label.
• Adds display string for UsernamePassword vc info label.
• Set configurable text on instruction label.