If I click on whatever datum cell in calendar (clock applet), the Evolution
calendar window will appear (every double-click will show new window) -- and the
window won't get focus -- that's pitty. My idea is: on every doubleclick:

a) if there is an Evolution running, the Evolution calendar window will appear
in existing 
Evolution session and gets focus on the workspace, where I am right now (like if
I am click on the Rhytmbox icon at notification area on gnome-panel)

b) if there is not the Evolution running, the Evolution session will start with
Evolution calendar window opened and gets focus on the workspace, where I am
right now.

Also, it will be very nice if Evolution won't ignore right date, which I clicked
in calendar at clock applet. Every time Evolution will appear with today's date
and NOT with date, which I clicked before.

NOTE: Excuse me for my bad English, I'm just teaching english language ;-)