update the `bug` link in the sidebar to the report bug wiki page
update the `bug` link in the sidebar to the report bug wiki page

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