Update outdated screenshots on web ui for users

[KarunAtreya]

WHAT Needs to be Documented?

1. screenshot of startscreen
   
2. screenshot of top navigation
   
3. screenshot of application switcher
   
4. screenshots of account menu
   
5. screenshots of personal in the left sidebar
   
   
   
6. screenshot of deleted files
   
7. screenshot of right sidebar
   
8. screenshot on sharing
   
9. screenshots on sharing roles and permissions
   personal sharing view
   
   space sharing view
   
   spaces view
   

WHERE Does This Need To Be Documented (Link)?

1. https://doc.owncloud.com/webui/next/owncloud_web/web_for_users.html#introduction
2. https://doc.owncloud.com/webui/next/owncloud_web/web_for_users.html#top-navigation
3. https://doc.owncloud.com/webui/next/owncloud_web/web_for_users.html#application-switcher
4. https://doc.owncloud.com/webui/next/owncloud_web/web_for_users.html#account-menu
5. https://doc.owncloud.com/webui/next/owncloud_web/web_for_users.html#personal
6. https://doc.owncloud.com/webui/next/owncloud_web/web_for_users.html#deleted-files
7. https://doc.owncloud.com/webui/next/owncloud_web/web_for_users.html#right-sidebar
8. https://doc.owncloud.com/webui/next/owncloud_web/web_for_users.html#sharing
9. https://doc.owncloud.com/webui/next/owncloud_web/web_for_users.html#sharing-roles-and-permissions

WHY Should This Change Be Made?

1. change in ui of navigation bar such as notifications, addition of view switcher on top bar
2. change in ui of navigation bar such as notifications
3. changed user management button to administration settings
4. setting option is not on account menu (shifted to top bar beside view switcher)
5. change in top navigation bar, addition of view switcher, addition of tile size slider on settings
6. change in ui of navigation bar (notifications button added, light theme and dark theme text removed now only button)
7. change in ui of navigation bar and download, move, copy and delete options is now on context menu
8. set expiration date is added beside share option
9. change in ui of navigation bar

(Optional) What Type Of Content Change Is This?

• New Content Addition
• Old Content Deprecation
• Existing Content Simplification
• Bug Fix to Existing Content

(Optional) Which Manual Does This Relate To?

• Admin Manual
• Developer Manual
• User Manual
• Android
• iOS
• Branded Clients
• Desktop Client
• Other

[mmattel]

Complexity: 2