**As** a \[enter role of user\]
**I want to** \[enter objective\]
**so that** \[enter desired result\]

**Acceptance criteria**

* Begin of the insertion\[Open\] Decide which pages should have an "Undo" action

* Make the snack bars always full width

* When the snack bar appears in a page with a FAB this should be pushed on top of the bar

* Pages where we have a snack bar:End of the insertion Begin of the deletion Pages:End of the deletion

* Relation created

* File added

* Watcher added

* Comment added

* Work package created

* Work package edited

* Notification marked as read

* All notifications marked as read


### Previous bug:

> Steps to reproduce
>
> 1. Login with a user that has permissions to edit WP relations
>
> 2. Go to any WP
>
> 3. Go to the relations tab
>
> 4. Add any relation type and save
>
>
> What is the buggy behavior?
>
> * Success toast doesn't have the 'Undo' action
>
> * There is a `x` to dismiss the toast
>
>
> What is the expected behavior?
>
> 1. Success toast has an 'Undo' action
>
> 2. No `x`
>
>
> Screenshots and other files
>
> <img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/323065/content">
>
> Environment information
>
> **OpenProject version**
>
> 1.1.0 (206)
>
> **Operating System**
>
> * [ ] Windows
> * [ ] Mac OS X
> * [x] Mobile Begin of the insertioniOS End of the insertion Begin of the deletion iOS&nbsp;End of the deletion
> * [ ] Mobile Android
> * [ ] Linux (please specify distro)
> * [ ] Chrome OS
> * [ ] Other (please specify)