make the hash in oembed cache dynamic as to try to fix travis
make the hash in oembed cache dynamic as to try to fix travis

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