Auto-update functionality is not ready for usage. As a workaround to
prevent users staying with older versions, we now check for updates at
startup, and if the user is not running the latest version, we present a
modal informing the user of the availiblity of a new version, and
provide a call to action to open the Etcher website in his web browser.
Extra features:
- The user can skip the update, and tell the program to delay the
notification for 7 days.
Misc changes:
- Center modal with flexbox, to allow more flexibility on the modal height.
interacting with the S3 server.
- Implement `ManifestBindService`, which now serves as a backend for the
`manifest-bind` directive to allow the directive's functionality to be
re-used by other services.
- Namespace checkbox styles that are specific to the settings page.
Fixes: https://github.com/resin-io/etcher/issues/396
Signed-off-by: Juan Cruz Viotti <jviottidc@gmail.com>
