fetch incoming mail when mail client logged in
Merge remote-tracking branch 'kali/feature/3525_login_triggers_fetch' into develop
Make username lower case before using them
Merge remote-tracking branch 'chiiph/bug/lower_case_username' into develop
Remove unused resources path.
Add preferences panel.
Add password change feature.
Add changes file. Closes #2798, #3500, #3533.