add link for spanish language to index.html, corresponding styling to style.css
CSS & HTML edits to accomodate language-toggle button across site; populate spanish-translation of site; PENDING TRANSLATION CHECK
Update copyright date in all files; add clojure portfolio pieces to portfolio.html and es-portafolio.html
Edits to Spanish translation; removal of unneeded portfolio-mdhs
Edits to es-portafolio.html for better translation
text edits to espanol.html and es-portafolio.html