Quality of life improvements for dropdown menu

[rl-83]

Feature Request

Is your feature request related to a problem or unsupported use case? Please describe.
Several small issues and gaps in the dropdown menu that appears when clicking the "more" button of a document.

1. Copying a link requires clicking "share" then copying the link—a three-step process when in the index.
2. Users cannot pin a document while viewing it.
3. The "Share" button label is misleading when users lack sharing permissions.
4. Users cannot remove themselves from shared documents when they are not the owner, resulting in a cluttered list of unwanted documents.

Describe the solution you'd like
Several small solutions:

1. Add a "Copy Link" button to the dropdown menu, except when this button already appears in the document view.
2. Add a pin option to the dropdown menu when viewing a document, and update the document icon to display the pinned status.
3. Change the "Share" button text to "Sharing" in the dropdown menu when users lack sharing permissions.
4. Add an option in the dropdown menu to leave documents when you're not the owner.

Discovery, Documentation, Adoption, Migration Strategy

(1), (2), (3), (4) :

(2) :

[rvveber]

Also, the "share" button disappears once sharing is activated and the people icon button appears instead.
The change is easily missed and i'm sure it will cause confusion, i understood it quickly, but the average person could hang up on that, endlessly looking for where that share button was again.

[virgile-dev]

Hey @rl-83

except when this button already appears in the document view.
I'm confused where does it appear ?
Also how do you suggest we tackle @rvveber comment ?