Add-on store: Make add-on version contextual on views (#14891)
Part of #13985
Summary of the issue:
When viewing installed or disabled add-ons, the user wants to know the information on the version of the installed add-on.
When viewing updatable or available add-ons, the user wants to know the information about the available version.
Before this PR, the data show was the available version if it exists, else the installed version.
Description of user facing changes
When viewing installed or disabled add-ons, the version listed should be the installed version, not the latest version available in the add-on store.
Description of development approach
Group add-ons by available/installed.
Show the correct add-on list depending on the view.
