AppMachine Designer fixes:
- Added a modal to the APK download link through which users can choose to download the current APK version of their app, or create a new version before downloading.
- Fixed an issue in the Google Publishing process which was causing an inability to progress after the keystore was created. The process would loop endlessly.
- Fixed an issue in the Google Publishing process which was causing multiple follow-up steps to be triggered simultaneously after the Maps API key was entered by the user.