Update loading indicator in dashboard

[bjarnef]

It would be great to replace the loading indicator in ModelsBuilder dashboard, which is shown when generating models.
https://github.com/umbraco/Umbraco-CMS/blob/dev-v8/src/Umbraco.Web.UI/App_Plugins/ModelsBuilder/modelsbuilder.html#L30-L32

<div class="umb-loader-wrapper" ng-show="vm.generating">
       <div class="umb-loader"></div>
</div>

Similar to this in NuCache dashboard using umb-load-indicator:
https://github.com/umbraco/Umbraco-CMS/blob/dev-v8/src/Umbraco.Web.UI.Client/src/views/dashboard/settings/nucache.html#L3-L5

<div ng-show="vm.loading || vm.working" style="background: rgba(255, 255, 255, 0.60); position: absolute; left: 0; right: 0; top: 0; bottom: 0;">
        <umb-load-indicator></umb-load-indicator>
</div>

The inline styling is an overlay while loading. Maybe @nielslyngsoe has an idea to a name of this class maybe umb-load-indicator-wrapper?

[bjarnef]

Note that the umb-loader + umb-loader-wrapper are used a few places, but mainly at tree nodes.
https://github.com/umbraco/Umbraco-CMS/search?q=umb-loader&unscoped_q=umb-loader

I think is would make sense to put this in another component e.g. umb-loader so the markup is only maintained from a single file. Furthermore it is wrapper umb-loader-wrapper is missing, which it was original in Umbraco, it got some annoying horizontal scrollbar on/off while umb-loader was animating.

I have created an issue for that umbraco/Umbraco-CMS#4958

[ronaldbarendse]

And also make sure the loader is contained within the box:

[zpqrtbnk]

Thanks @ronaldbarendse - @bjarnef any chance you can have a look at this, so I can merge in an upcoming release?

[zpqrtbnk]

Core umb-loader component now works, using it...

[zpqrtbnk]

Good