De-autotranslated Dutch language file

Dutch language was quite obviously translated with a translation engine.
Add Colombia Spanish to the languages with the respective holidays for the rest of 2014 and 2015
add es-CO as option to index.html and index-bs3.html
Merge pull request #400 from alexrqs/add-spanish-CO-language

Add Colombia Spanish to the languages with the respective holidays for t...
Update calendar.min.js

Re-minifier js
Update calendar.min.css

Re-minifier the calendar.css
Merge pull request #411 from eleazan/master

Minifier
Merge pull request #396 from DannyStreur/patch-1

De-autotranslated Dutch language file
Merge remote-tracking branch 'origin/master'
reverted hungarian language back.