Spanish: Fixed typos and minor cosmetic changes.

[egofer]

[barbeau]

Thanks @egofer! I cleaned up the commits here a bit and merged them into a single commit, which can be seen in https://github.com/CUTR-at-USF/OpenTripPlanner-for-Android/pull/466.

I just need one more item from you - could you please fill out the ICLA here?

As soon as you fill this out I'll get your contribution merged. Thanks!

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}