add a missing space for notifications with less than 4 people
add a missing space for notifications with less than 4 people

Muhannes/diaspora,Muhannes/diaspora,SuperTux88/diaspora,KentShikama/diaspora,jhass/diaspora,KentShikama/diaspora,Amadren/diaspora,geraspora/diaspora,spixi/diaspora,Flaburgan/diaspora,spixi/diaspora,KentShikama/diaspora,despora/diaspora,Amadren/diaspora,KentShikama/diaspora,Muhannes/diaspora,jhass/diaspora,SuperTux88/diaspora,Amadren/diaspora,despora/diaspora,despora/diaspora,Flaburgan/diaspora,diaspora/diaspora,geraspora/diaspora,Flaburgan/diaspora,geraspora/diaspora,jhass/diaspora,spixi/diaspora,Amadren/diaspora,spixi/diaspora,diaspora/diaspora,SuperTux88/diaspora,Muhannes/diaspora,diaspora/diaspora,Flaburgan/diaspora,jhass/diaspora,geraspora/diaspora,diaspora/diaspora,despora/diaspora,SuperTux88/diaspora