included message catalog

[kzidane]

Solves #94.

$ pip install -U .
...
Successfully installed requests-2.18.3 submit50-2.4.1
$ locale-gen es_ES.UTF-8
Generating locales...
  es_ES.UTF-8... done
Generation complete.
$ export LANGUAGE=es_ES.UTF-8
$ submit50 cs50/2017/x/hello
Connecting.......
Parece que faltan estos archivos:
 hello.c
Asegúrate de tener los archivos necesarios antes de entregar.
$ export LANGUAGE=en_US
$ submit50 cs50/2017/x/hello
Connecting.....
You seem to be missing these files:
 hello.c
Ensure you have the required files before submitting.
$ find / -type f -name messages.mo
/opt/pyenv/versions/3.6.0/submit50/locale/es/LC_MESSAGES/messages.mo

[kzidane]

@dmalan any takes on this one before merging in?

[dmalan]

Oops, sorry for missing this. Do we not currently compile the .po to .mo upon build?

[kzidane]

No worries. Just rebased. Nope, but we should be doing that once this is merged if you don't have any takes.