request connection password only when neede. No need to request it for GSSAPI or ANONYMOUS login. see #2465

restore old behaviour of systray: left click open pending event if any, else hide/show roster. Fixes #4436

encrypt and decrypt GPG messages in a thread, and call a callback when it's finished (sending a message is now asyncronous). Fixes #4445

[pvgoran] use correct function to get custom status message. Don't ask it if there is a default message configured. Fixes #4762