Adding arrows to active migrations with map

Adds arrows to `migrate:map` for both readability and also to support terminals without full color support.

```
> 1414870746_create_person_table
> 1415409100_create_foo_table
> 1415409339_create_bar_table
  1415409516_create_baz_table
  1415409523_create_tizz_table
```

Also quoting some unquoted variables in logger