Server: implement suggestedUsername and check if usernames have valid length
Server: implement suggestedUsername and check if usernames have valid length

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