Fix #2354 (attempt 3).
Fix #2354 (attempt 3).

Sends the user to the application root (redirecting to /explore) after
they remove post from the post page with one post on it.

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