[ES] Translated basics/date-time chapter (#1592)
[ES] Translated basics/date-time chapter (#1592)

* [ES] Translated basics/date-time chapter

* [ES] Requested changes and corrections for date-time chapter

nscyclone/elixir-school,doomspork/elixir_school,nscyclone/elixir-school,doomspork/elixir-school,nscyclone/elixir-school,nscyclone/elixir-school,doomspork/elixir-school,doomspork/elixir_school,doomspork/elixir_school,doomspork/elixir-school