Implement collection management screens

[benoit74]

We need two screens to manage collections:

• a collection list view to display all collection
• a collection details view to display collection details

In collection list we want to:

• show a (paginated) list of existing collections
• show this view in the top menu (after titles and before yet-to-come "Users")
• have a "Create collection" button with a popup to create a new collection

In collection details, we want to:

• show all collection properties
• have an "edit collection" popup to alter an existing collection content

For now it will be impossible to delete a collection from the UI.

Obviously means we need to API endpoint (create and alter collections, list warehouses, ...)

Feel free to split if this is just too big for a single PR.

[elfkuzco]

Trying to implement the logic for creating collections and I want the user to pass in the warehouse name but it turns out that name is not unique on Warehouse table. Is that intentional?

[benoit74]

No it's not ; it should be unique indeed

[kelson42]

In collection details, we want to:\n\nshow all collection properties\nhave an "edit collection" popup to alter an existing collection content

... And the list of titles belonging to the collection

[benoit74]

... And the list of titles belonging to the collection

Are you sure we want to do that? I'm sure it will be a very long list, and I'm sure we will want to add support for filtering on this list as well. I think it would be simpler to add a "collection" filter on Title list: https://cms.openzim.org/titles so that we can make any advanced search in one single place (rather than having a limited list displayed in collection details or two places where we implement the same functionality).

[elfkuzco]

what should happen when we alter a collection's warehouse? how will books be affected?

[benoit74]

Collection warehouse should indeed be read-only ATM, good point

[kelson42]

... And the list of titles belonging to the collection

Are you sure we want to do that? I'm sure it will be a very long list, and I'm sure we will want to add support for filtering on this list as well. I think it would be simpler to add a "collection" filter on Title list: https://cms.openzim.org/titles so that we can make any advanced search in one single place (rather than having a limited list displayed in collection details or two places where we implement the same functionality).

@benoit74 At this stage, no strong opinion. You might be right, maybe just provide a direct link to see straight the filtered list.