[Perfomance and usability] Refactor Loading

[antoineatstariongroup]

Prerequisites

• I have written a descriptive issue title
• I have verified that I am running the latest version of the COMET-WEB
• I have searched open and closed issues to ensure it has not already been reported

Description

When the auto-refresh is enable with a low refresh-rate, the webapp start to be unusable.

We have to think about refactor the loading strategy and to make sure to only display the loading component when it make sense.
Moreover, we could use two new components from DevExpress : DxLoadingPanel and DxWaitIndicator

• Remove the use of the LoadingComponent
• Use DevExpress component inside visual component to let a panel/table/diagram display the loading by itself. It will remove the loading component for the whole page and let user use other component in the meantime
• Make sure that every VM display the loading component when needed => Do not refresh data all the time, make sure to filter and to subscribe only when it's necessary.
• When updating data, do not clear the whole collection and recreate everything : please recycle your row, update properties, delete what really needs to be deleted and add new entries.

Steps to Reproduce

Logs

• There are no logs regarding the issue
• I have attached a log file or included the relevant section in this issue

System Configuration

• COMET version:
  • COMET-WEB:
  • Other:
• Web Services:
  • COMET Web Services version:

[joao4all]

For this tasks, some work was done in this branch