User frustration due to lost Server URL and user name

[be-glass]

Summary

Client should always remember Server URL and user name

Environment Information

• Device Name: any
• OS Version: any
• Mattermost App Version: latest
• Mattermost Server Version: latest

Steps to reproduce

How can we reproduce the issue (what version are you using?)

• Connect client to Mattermost server
• log in
• Wait until the log in expires

Expected behavior

• User needs to enter password for authentication
• The client shows the last used server URL(s).
• The client shows the last used user name(s).

Observed behavior (that appears unintentional)

After session expiry, the user is presented with blank fields for Server URL and user name.

Many users don't remember the server URL, and don't bother to ask the administrator. This causes a large number of users to abandon the platform, due to inexperience or lack of motivation.

Possible fixes

Let the client remember Server URL and user name and save the users from having to remember them.

[amyblais]

Closing as a duplicate of https://github.com/mattermost/mattermost-mobile/issues/7076.