[fix] Testing fixes

- sqlite error handling and wrapping
- more responsive commands
- database updates

cmd/server/server.go

@@ -7,6 +7,11 @@ import (
 	"github.com/spf13/cobra"
 )
 
+const (
+	ErrInit    = "sqlite3: SQL logic error: no such table: servers"
+	ErrInitRsp = "The 'init' command must be run before mctl can be used"
+)
+
 var ServerCmd = &cobra.Command{
 	Use:     "server",
 	Example: "mctl server <subcommand>",