fixed cannot create same topic in different groups
fixed cannot create same topic in different groups

cihangir/koding,alex-ionochkin/koding,kwagdy/koding-1,sinan/koding,drewsetski/koding,acbodine/koding,mertaytore/koding,rjeczalik/koding,alex-ionochkin/koding,kwagdy/koding-1,szkl/koding,kwagdy/koding-1,cihangir/koding,usirin/koding,drewsetski/koding,drewsetski/koding,szkl/koding,szkl/koding,sinan/koding,drewsetski/koding,koding/koding,jack89129/koding,kwagdy/koding-1,koding/koding,koding/koding,mertaytore/koding,rjeczalik/koding,mertaytore/koding,kwagdy/koding-1,usirin/koding,cihangir/koding,andrewjcasal/koding,sinan/koding,cihangir/koding,alex-ionochkin/koding,koding/koding,mertaytore/koding,mertaytore/koding,szkl/koding,jack89129/koding,alex-ionochkin/koding,gokmen/koding,usirin/koding,acbodine/koding,koding/koding,jack89129/koding,andrewjcasal/koding,cihangir/koding,sinan/koding,koding/koding,acbodine/koding,cihangir/koding,szkl/koding,gokmen/koding,rjeczalik/koding,andrewjcasal/koding,drewsetski/koding,kwagdy/koding-1,gokmen/koding,mertaytore/koding,rjeczalik/koding,jack89129/koding,andrewjcasal/koding,szkl/koding,acbodine/koding,gokmen/koding,sinan/koding,sinan/koding,usirin/koding,drewsetski/koding,koding/koding,szkl/koding,acbodine/koding,koding/koding,gokmen/koding,rjeczalik/koding,alex-ionochkin/koding,rjeczalik/koding,usirin/koding,gokmen/koding,acbodine/koding,mertaytore/koding,andrewjcasal/koding,sinan/koding,kwagdy/koding-1,alex-ionochkin/koding,cihangir/koding,mertaytore/koding,alex-ionochkin/koding,jack89129/koding,drewsetski/koding,jack89129/koding,usirin/koding,jack89129/koding,andrewjcasal/koding,acbodine/koding,cihangir/koding,andrewjcasal/koding,acbodine/koding,drewsetski/koding,rjeczalik/koding,rjeczalik/koding,alex-ionochkin/koding,gokmen/koding,sinan/koding,gokmen/koding,szkl/koding,jack89129/koding,usirin/koding,kwagdy/koding-1,usirin/koding,andrewjcasal/koding