Background
The Android and iOS mobile apps have had the saved tab and custom reading lists for many years now. They have had slightly different functions on Android versus iOS, but custom lists have always been shared and synced on the server. This year, the Web team is adding a "Saved" function, and they will support saving articles to one list, and soon after custom lists. We want to make sure that the experience matches across Web and the mobile apps when users simply saves something, and adds it to a custom list.
User story
As an existing Wikipedia app user with a "Saved" list, I want to be able to see articles that have not been organized onto a custom lists yet, so that I can organize them.
Requirements
- For all users: do not show the "Saved" list within the list of collections
- Add a Filter option to filter by "Not in collection" vs "All articles" view
- All articles view = shows all articles in collections, and not in collections (flat list)
- "Not in collection" view = shows only articles NOT in any collections
- Show tooltip on"saved" tab to existing users to let them know that reading lists are now called collections
- Shown once per app user
- Only show to existing users, not fresh installs
- Tooltip should expire on September 15
- Remove tooltip when user taps into "Saved" or taps "Got it" similar to Explore tooltip (https://phabricator.wikimedia.org/T428681)