Add portuguese translation to index.html page
Merge branch 'master' into pt-br

Conflicts:
	index.html
Translate remix
Translate internal pages
Translating metatags
Translate title
Translate dragging
Translate buttons
Translate graph
Revising index, merging some better translation terms from @bassarisse's work
Optimizing images
Translation credits
Optimizing button images
Using the de facto standard translation for tweet :P
Reapply link fix from 5686d28