added "Language" section link
Merge branch 'master' into gh-pages
update buttons and print layout
Merge branch 'master' into gh-pages
checkspelling
Merge branch 'master' into gh-pages
update content
Merge branch 'master' into gh-pages
added credits
Merge branch 'master' into gh-pages
reindent - added GA tracking
Merge branch 'master' into gh-pages
update title survey
some fix
Merge branch 'master' into gh-pages
fix fb share
Merge branch 'master' into gh-pages
fb share bugfix
Merge branch 'master' into gh-pages
share fb bugfix