This PR cleans up a number of references in doc comments so that
`rustdoc` will link and display them correctly.

Release Notes:

- N/A

Co-Authored-By: Antonio Scandurra <antonio@zed.dev>

🍐d with @conrad @mikayla-maki on covering some of the surface area.

Release Notes:

- N/A

Co-authored-by: Conrad <conrad@zed.dev>

Co-Authored-By: Antonio Scandurra <me@as-cii.com>

Co-Authored-By: Conrad <conrad@zed.dev>

Co-Authored-By: Antonio Scandurra <me@as-cii.com>

Co-Authored-By: Conrad <conrad@zed.dev>
Co-Authored-By: Mikayla <mikayla@zed.dev>

Co-Authored-By: Antonio Scandurra <me@as-cii.com>

Co-Authored-By: Antonio Scandurra <me@as-cii.com>

The test in particular should be included in our release binary at
present. :/
Release Notes:

- N/A

This PR removes the `Default` impl for `StatusColors`.

Since we need default light and dark variants for `StatusColors`, we
can't use a single `Default` impl.

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- N/A

Fixes https://github.com/zed-industries/community/issues/2388
Release Notes:

- Fixed tab content of project search overflowing the tab for queries
with newlines.

This PR adds a `SharedUrl` type to GPUI.

It's just like a `SharedString`, but for denoting that the contained
value is a URL.

Mainlined from @nathansobo's GPUI blog post:
https://github.com/zed-industries/zed/pull/3968/files#diff-7ee75937e2daf7dd53f71b17698d8bd6d46993d06928d411781b9bd739b5f231R9-R12

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- N/A

This PR renames the `IconElement` component to just `Icon`.

This better matches the rest of our components, as `IconElement` was the
only one using this naming convention.

The `Icon` enum has been renamed to `IconName` to free up the name.

I was trying to come up with a way that would allow rendering an
`Icon::Zed` directly (and thus make the `IconElement` a hidden part of
the API), but I couldn't come up with a way to do this cleanly.

Release Notes:

- N/A

Release Notes:

- N/A

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- N/A

I think this will be a key user experience driver, but we do need to
find a way to enable it without widening our vector clocks.

This PR adds some basic stories for collab notifications to make them
easier to work on:

<img width="1076" alt="Screenshot 2024-01-08 at 9 43 39 PM"
src="https://github.com/zed-industries/zed/assets/1486634/4a0adcfa-1134-49c2-b589-74ac1d52af4c">

I factored out a `CollabNotification` component that defines the general
structure for one of these notifications, and this is the component that
we use in the stories, with representative values passed to it to
simulate the different instances of the notification.

We can't use the actual notification components in the stories due to
their data dependencies.

Release Notes:

- N/A

This PR fixes an issue where right-click on any project panel entry
would cause the context menu on the root of the project panel
(introduced in #3954) to deploy.

We need to stop propagation in the handler on the inner project panel
list items so that the click event doesn't bubble up the tree.

Release Notes:

- Fixed an issue where the project panel was always deploying the root
context menu rather than on the clicked item.

Fixes https://github.com/zed-industries/community/issues/2379

Release Notes:

- Fixed issue where keybindings in some context menus would not show
reliably.

As it says on the tin

Release Notes:

- Restored the terminal cursor's I-beam and pointing hand settings

As it says on the tin

Release Notes:

- Restored the active pane magnification setting.

Release Notes:

- N/A

This PR tightens up the design of the feedback dialog:

<img width="680" alt="Screenshot 2024-01-08 at 6 20 50 PM"
src="https://github.com/zed-industries/zed/assets/1486634/8dc0e687-2459-4ab3-b69f-b610ce067ef1">

<img width="682" alt="Screenshot 2024-01-08 at 6 21 24 PM"
src="https://github.com/zed-industries/zed/assets/1486634/f0730710-16e0-4d61-a919-60874442186a">

Release Notes:

- Improved the design of the feedback dialog.

This PR fixes the border color used when the email input in the feedback
dialog is invalid.

Previously this was hardcoded just to `red` instead of using the
appropriate color from the theme.

<img width="653" alt="Screenshot 2024-01-08 at 5 40 07 PM"
src="https://github.com/zed-industries/zed/assets/1486634/ea01cd76-d661-4512-b668-c82b8d00d84e">

Release Notes:

- Fixed the border color used for the email input in the feedback dialog
when an invalid email is entered.

- First pass of real access control
- Check user is host for host-broadcasted project messages
- Only allow read-write users to update buffers

[[PR Description]]

Release Notes:

- (Added|Fixed|Improved) ...
([#<public_issue_number_if_exists>](https://github.com/zed-industries/community/issues/<public_issue_number_if_exists>)).

Release Notes:

- Fixed a crash that could occur when creating files with '..' in the
path

Co-Authored-By: Max <max@zed.dev>