Addresses https://github.com/zcash/zcash-android-wallet/issues/143 by placing everything behind a user setting that can be enabled in the future by users who want to continue helping us improve the user experience. For the most part, this will just be turned on for internal company releases in order to continue learning and improving the app.
- added home screen banner and logic to show/hide messages
- added no balance banner and behavior
- added landing and backup screens
- fixed and finished receive screen
- added back buttons
- switched from rounded to cut corners
- added sound and vibration
- added ability to detect dev environment and adjust behavior
Kevin Gorham