Add sketches to a collection

[andrewn]

Nature of issue?

• New feature request

New feature details:

This issue merges #43, #1068 as I think that an initial implementation of Collections should allow a user to add anyone's sketches into their Collections.

Collection

Collections have the following properties:

• id (a shortid, like projects)
• name
• description
• slug (for easily shareable URLs)
• owner
• items (a list of collected sketches)

Features

1. A user can create a new collection
2. A user can edit their collections' name, description and slug
3. A user can delete their own collections'
4. A user can see their own collections
5. A user can see another user's collection (by their username)
6. A user can add and remove any sketch to their own collections
7. Collections can be sorted by:
   • name
   • date sketch was added
   • date sketch was created
   • date sketch was last updated
   • sketch owner's username
8. Deleting a sketch that is in a collection removes it from all collections
9. Changing a slug changes the URL the collection is available at, and the old slug URL will not longer work

Out of scope

• Submitting a sketch to another user's collection
• Displaying sketches as a thumbnail in a grid view

[andrewn]

@catarak If you're ok with this, I'll close #43 and #1068 in favour of this issue.

[catarak]

thanks for making this issue! i do think that users being able to submit/add sketches to a collection that is not theirs is important, the use case being a classroom/assignment setting. there's obviously a totally new design here, but maybe that's something i can work on.

[andrewn]

Totally agree with you @catarak. I've opened #1117 to capture this.

[catarak]

fixed by #1340.