Stick to the chosen namespace + pick one if no image about docker-registry-ui

[roman-vynar]

The default namespace is library, i.e. the root one. Probably, making a chosen namespace sticky will be better.

[Crocmagnon]

Nevermind, I didn't see the "Namespaces" dropdown. Suggestion : if there's only one namespace, select it by default, or present a list of namespaces before an empty list of repos 😊

EDIT : My first issue is solved but I reopened this to give more visibility to this suggestion.

[Crocmagnon]

Sticking to the chosen namespace is a good idea, and I'd like to add both:

• picking a namespace containing images if there is no image in library
• make it clear in UI that the images list is for a given namespace

[roman-vynar]

In 0.7.3 I have made the following changes:

* Improve no data message on empty tables on UI.
* Show the root namespace "library" in the dropdown even when there are no repos in it.

Not making it sticky as it's complicated as it depends from an URL address, when going to / it should be the "library" root namespace and confuses things. You can always navigate to the namespace chosen from tags or tag info pages using the breadcrumb links instead of clicking Home.

If you have more suggestions, PR is welcome.