[UI] "Show only personal" is only effective when opening collection list again

[rfc2822]

Steps to reproduce:

1. Add an account with personal and non-personal collections (for instance use eGroupware test credentials).
2. In the database, homesets are correctly marked as personal=0 or personal=1.
3. However in the UI, the default is "[ ] Show only personal", so all collections are shown. So check the checkmark.

Expected result:

Only personal collections should be shown.

Actual result:

All collections are shown, although the "Show only personal" checkbox is active.

If you then leave the account screen and enter it again, only the personal collections are shown. So the option works in principle, but only when the screen is created.