Bucky/rest refactor

[ebuchman]

Some refactoring and cleanup in the client/rest.

Removes dependencies on client/commands and organizes into ServiceKeys and ServiceTxs.

Note it's a breaking change:

+       rootDir := viper.GetString(cli.HomeFlag)
+       keyMan := client.GetKeyManager(rootDir)
+       serviceKeys := rest.NewServiceKeys(keyMan)
+       serviceTxs := rest.NewServiceTxs(commands.GetNode())
+
        routeRegistrars := []func(*mux.Router) error{
                // rest.Keys handlers
-               rest.NewDefaultKeysManager(defaultAlgo).RegisterAllCRUD,
+               serviceKeys.RegisterCRUD,
 
                // Coin send handler
                coinrest.RegisterAll,
@@ -54,9 +60,9 @@ func serve(cmd *cobra.Command, args []string) error {
                rolerest.RegisterCreateRole,
 
                // Basecoin sign transactions handler
-               rest.RegisterSignTx,
+               serviceKeys.RegisterSignTx,
                // Basecoin post transaction handler
-               rest.RegisterPostTx,
+               serviceTxs.RegisterPostTx,

[faboweb]

Thx a ton Bucky!