ssh: hosts (+ ukolegija)
gtk3: icon-theme default got fixed

Commit 2488b954f24c01f99995ff22898628c57b4aedc1 changes default icon theme to Adwaita.
bash/aliases: add `sd`
ssh: add more ukolegija aliases
ca-certs: add school's local CA
ca-certs: describe all certificates
msmtp: reorder accounts
msmtp: add work account
ssh: hosts (add a local alias for uk-pf-maironio7)