Linking Back and Forth between two web interfaces

[egekorkan]

For the near future, I want to keep to old playground at http://plugfest.thingweb.io/playground/ still alive. However, we should point people to the new one. Also, in the new one, there should be a link to the feedback discussion saying something like "This is a new web interface. Please provide feedback at #492"

[egekorkan]

For the old one: We should add a pop-up to direct people to the new one and saying that the old one will cease operation by April. This will give people 3 months of notice, which is what we agreed on in the previous calls.

For the new one: A button to the left of the CLI saying "Feedback" and point to #492. A title attribute can extend this by saying "This is a new design which is open to feedback to change the layout and UX"

[egekorkan]

Once the remaining PRs (#515, #541, #542) are merged, we can also remove BETA version from the title

[egekorkan]

This is done now