Lint errors need to be fixed

[zanuka]

the following errors should be fixed:

app/api/api.go:62:1: exported function RouteBuilder should have comment or be unexported
app/api/api.go:68:1: exported function OpenRouteHandler should have comment or be unexported
app/conf/appconfig.go:22:6: exported type Coins should have comment or be unexported
app/daemon/daemonapi/vars.go:5:1: comment on exported var NavConfig should be of the form "NavConfig ..."
app/daemon/daemonrpc/rpc.go:14:6: exported type RpcRequestData should have comment or be unexported
app/daemon/daemonrpc/rpc.go:14:6: type RpcRequestData should be RPCRequestData
app/daemon/daemonrpc/rpc.go:19:6: exported type RpcResp should have comment or be unexported
app/daemon/daemonrpc/rpc.go:19:6: type RpcResp should be RPCResp
app/daemon/daemonrpc/rpc.go:60:1: exported function RPCFailed should have comment or be unexported
app/daemon/daemonrpc/rpc.go:69:2: var respJson should be respJSON
app/middleware/adapter.go:15:1: comment on exported function Adapt should be of the form "Adapt ..."
app/middleware/notify.go:8:1: exported function Notify should have comment or be unexported```