Always check server id when retrieving user data from AccountManagerStore

[nielsvanvelzen]

Side effects

Unfortunately the changes in this PR have some side effects:

• When the "auto login" option is used and set to a specific user the PR disables it. You need to manually set the user again.
• When the "auto login" option is used and set to use the last active user, you need to select a user once after updating. No further action is required.

Changes

• Always check server id when retrieving user data from AccountManagerStore
  • This fixes a security issue when 2 servers use a same user id, this should normally not happen but a malicious server could technically do this. There are no known instances of this happening.

Issues