[LastfmRequest] Catch WebException (bgo#609054)
[LastfmRequest] Catch WebException (bgo#609054)

GNOME/banshee,ixfalia/banshee,ixfalia/banshee,mono-soc-2011/banshee,Carbenium/banshee,Dynalon/banshee-osx,stsundermann/banshee,GNOME/banshee,mono-soc-2011/banshee,ixfalia/banshee,arfbtwn/banshee,babycaseny/banshee,Dynalon/banshee-osx,mono-soc-2011/banshee,lamalex/Banshee,Carbenium/banshee,arfbtwn/banshee,arfbtwn/banshee,mono-soc-2011/banshee,directhex/banshee-hacks,arfbtwn/banshee,lamalex/Banshee,dufoli/banshee,GNOME/banshee,Carbenium/banshee,Dynalon/banshee-osx,babycaseny/banshee,babycaseny/banshee,Dynalon/banshee-osx,stsundermann/banshee,allquixotic/banshee-gst-sharp-work,babycaseny/banshee,ixfalia/banshee,GNOME/banshee,dufoli/banshee,Dynalon/banshee-osx,lamalex/Banshee,petejohanson/banshee,lamalex/Banshee,directhex/banshee-hacks,arfbtwn/banshee,petejohanson/banshee,directhex/banshee-hacks,GNOME/banshee,petejohanson/banshee,stsundermann/banshee,mono-soc-2011/banshee,dufoli/banshee,stsundermann/banshee,ixfalia/banshee,allquixotic/banshee-gst-sharp-work,Carbenium/banshee,petejohanson/banshee,directhex/banshee-hacks,dufoli/banshee,Dynalon/banshee-osx,babycaseny/banshee,ixfalia/banshee,Dynalon/banshee-osx,babycaseny/banshee,dufoli/banshee,ixfalia/banshee,babycaseny/banshee,stsundermann/banshee,dufoli/banshee,stsundermann/banshee,stsundermann/banshee,lamalex/Banshee,mono-soc-2011/banshee,Dynalon/banshee-osx,allquixotic/banshee-gst-sharp-work,lamalex/Banshee,allquixotic/banshee-gst-sharp-work,mono-soc-2011/banshee,petejohanson/banshee,dufoli/banshee,ixfalia/banshee,stsundermann/banshee,allquixotic/banshee-gst-sharp-work,petejohanson/banshee,GNOME/banshee,arfbtwn/banshee,dufoli/banshee,arfbtwn/banshee,GNOME/banshee,Carbenium/banshee,Carbenium/banshee,allquixotic/banshee-gst-sharp-work,directhex/banshee-hacks,babycaseny/banshee,GNOME/banshee,directhex/banshee-hacks,arfbtwn/banshee