Allow to shrink any file passed as argument
Save some vertical space in message part view
Add file type icons for pgp/pks7 signatures and attached email messages
Load a default stylesheet (embed.css) from skin in plain html pages (e.g. attachment warnings and html messages)
Added embed.css for classic skin, improved/unified warnings style (button is still different), cleanup
Fix new browser window size in Chrome (#1488931), make new windows smaller
Send LOGOUT only when closing connection in logged state (#1487784)