Removes the web UI as a separately released package.

[slackpad]

Since we have this built-in via the -ui configuration, the only reason
to use -ui-dir is if you are tweaking the web UI, so there's no need
to release the web UI as a .zip archive separately.

[magiconair]

LGTM

[scareything]

Our team has found the separate UI package to be very useful. We run consul behind a proxy and need to set consulHost so the UI's REST calls are correctly redirected to consul.

Unless consul provides a configuration option to effectively set consulHost, this change is going to prevent some people from upgrading. Please add a consulHost configuration option to consul, or continue releasing the UI separately.

[magiconair]

I think the right way to address this is to make consulHost configurable. I'll open another issue.

[slackpad]

@scareything sorry we broke that, I had forgotten about that variable when I made this change. As a workaround for this release you could pull the source tree from https://github.com/hashicorp/consul/releases for 0.9.0 (https://github.com/hashicorp/consul/archive/v0.9.0.zip) and use the ui subdirectory in there.