fixed typo
add credit
fix typo
redo {% block content %} being removed.
#874 fix profile links.
Automatically updating the calendar
Merge pull request #872 from CoderK/master

Insert my credit.
Merge pull request #875 from umaar/patch-1

#874 fix profile links.
Automatically updating the calendar
applied ‘HTML imports’ updates #854 @e89cfdbd8d3270187c440e249569d10983c257c5
applied ‘Custom elements’ updates #854 @e89cfdbd8d3270187c440e249569d10983c257c5
Merge pull request #878 from cwdoh/article.ko.webcomponents-imports-update

Updated KO version of ‘HTML imports’ from #854
register -> registerElement
enteredViewCallback ->  attachedCallback
leftViewCallback -> detachedCallback
Merge pull request #879 from cwdoh/article.ko.webcomponents-custom-update

ko translation of 'Custom element' update
update index.html (refer header.html, index.md)
fix typo.
fix typo.
add translator info.
Merge pull request #881 from ShinHyunjin/ko.translator.info.add

add translator info.
Merge pull request #880 from ShinHyunjin/ko.tutorials.webcomponents.customelements.update

ko translation of 'Custom element' update