fix(component-viewer) - annotation for components now working on ie8, clean up and style fixing.
Merge branch 'ie8-angular' of github.com:voorhoede/front-end-guide into ie8-angular

# By celine
# Via celine
* 'ie8-angular' of github.com:voorhoede/front-end-guide:
  feat(guide-viewer): ie8 native selectbox; ie9 and up styled selectbox.
  fix(guide-viewer): Add display block to view code samples