Got rid of HTML entities around <picture> and <img>

Since they look like they are already escaped.
Merge pull request #1214 from pearlchen/master

Got rid of HTML entities around <picture> and <img>
Added link to Web Fundamentals images guide home.
Merge pull request #1215 from pearlchen/master

Added link to Web Fundamentals images guide home.
Automatically updating the calendar
Automatically updating the calendar
Automatically updating the calendar
change "Webkit" to "WebKit"
Automatically updating the calendar
Merge pull request #1218 from Glowin/issuse1217

change "Webkit" to "WebKit" fix #1217
Merge pull request #1219 from html5rocks/master

Merging some fixes live.