PLT-6471 Properly panic when translations can't be loaded (#6414)

* PLT-6471 Properly panic when translations can't be loaded

* Print usage messages when errors occur during CLI initialization

* Reverted behaviour of FindDir and added second return value to it

* Fixed merge conflict

cmd/platform/mattermost.go

@@ -59,7 +59,9 @@ var resetCmd = &cobra.Command{
 }
 
 func resetCmdF(cmd *cobra.Command, args []string) error {
-	initDBCommandContextCobra(cmd)
+	if err := initDBCommandContextCobra(cmd); err != nil {
+		return err
+	}
 
 	confirmFlag, _ := cmd.Flags().GetBool("confirm")
 	if !confirmFlag {