Improvements when showing "Run/Try out" results

[orviz]

In the Pipeline as a Service, if the "Run /Try pipeline" button is clicked for a second time (i.e. once the first execution has ended successfully) the build is re-run without asking for a repository URL. Having the repo url and branch options (as in the first execution) would be desirable, with the previous values set.

On the other hand, it makes sense to show first the results ("pipeline was executed successfully" message and the Jenkins link) and below the "Run/Try button". The message and Jenkins link in the same horizontal (now that we don't need to show the badge)