Manage cloud explorer sources with 100s of items

[ivannaranjo]

We need to have a good way of dealing with the resources that can have 100s (if not 1000s) of items. The UI can be overloaded by these items, as well as the code that process the data can take a long time before updating the UI.

The solution being considered is to only load a maximum amount of items, say 100, and that's all that is shown in the UI, with an additional item in the UI that can direct the users to a more comprehensive UI to to show all of the items.

This limit should only apply after filtering, sorting, etc...

// cc @YnR