* Update tfjob components to v1beta1

Remove old version of tensor2tensor component

* Combine UI into a single jsonnet file

* Upgrade GH issue summarization to kf v0.4.0-rc.2

Use latest ksonnet v0.13.1
Use latest seldon v1alpha2
Remove ksonnet app with full kubeflow platform & replace with components specific to this example.
Remove outdated scripts
Add cluster creation links to Click-to-deploy & kfctl
Add warning not to use the Training with an Estimator guide
Replace commandline with bash for better syntax highlighting
Replace messy port-forwarding commands with svc/ambassador
Add modelUrl param to ui component
Modify teardown instructions to remove the deployment
Fix grammatical mistakes

* Rearrange tfjob instructions