[sugar] no "activity starting" screen when launch from Journal

[Mikus Grinbergs]

G1G1; Joyride 2172 equivalent; Q2E11.  When I launch an activity by 
clicking on the icon in the ring (Home view), I see the "activity 
starting" screen (blank, with pulsing activity icon in the middle) 
until the screen for the activity itself is drawn.  When I launch an 
activity by clicking on the icon in an entry on the Journal screen, 
I continue to see the Journal screen until the screen for the 
activity itself is drawn, WITHOUT getting to see the "activity 
starting" screen while the activity launch is being performed.

mikus