Fixed header background
Removed fixed header.
Specified feature display of ArticleTeaserWidget
Added meta tag viewport
Added meta tag viewport
Added tutorials
Fixed two broken links in ArticleBrowserWidget tutorial
Fixed two broken links in ArticleBrowserWidget tutorial
Corrected HelloWorld tutorial.
Corrected GettingStarted tutorial.
Corrected ShopDemo tutorial (Step 3).
Corrected ArticleBrowserWidget tutorial.
Fixed and changed some things in the tutorial and demo widgets.
Revised tutorials and added HeadlineWidget to page header.
Delete obsolete tutorial.
(#1) Refactored styling.
(#1) Changelog
(#1) bower.json
Merge branch 'feature/1-refactor-styling'

* feature/1-refactor-styling:
  (#1) bower.json
  (#1) Changelog
  (#1) Refactored styling.
release v1.2.0