Description of problem:
Currently, Service dialog loading happens with spinning wheel, wheel spins while there is something refreshing/processing in the backend, this is a good
design for a dialog with few dynamic fields but for dialog with a large
number of dynamic fields, the loading time might go high. For example, a service dialog with 18 dynamic fields. it stays 15 seconds on more on a spinning wheel, this give the impression there is a problem.
If we put some message like "dialog loading" on the screen while it is
being processed in the backend, that will give the impression to users
something is processing. not an impression of a problem.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Create a service dialog with several dynamic fields.
2. Create a catalog using above service dialog.
3. Order the service
Service dialog loading happens with just spinning wheel, no
any message displayed.
Should display a message stating the dialog is loading/