Merge pull request #148 from GregSutcliffe/gh-pages

Template updates
Add partial sprint 19 and 1.4.0-RC1 release notes
Fix CR links
Linkify release notes
Headline features, upgrade notes
Update upgrade steps
Contributors list
Merge pull request #149 from domcleal/wip-1.4

More 1.4 release notes!
Add pointer to upgrade instructions
Swedish
Release 1.4.0-RC1
Add translating to contributions page
Fix typo
Add documentation on chefproxy feature
Minor edits
Merge PR #151 into gh-pages
Update installer options
Slight modifications to the 1.4 manual to take into account the new menu layout in 1.4
Merge pull request #152 from abradshaw/gh-pages

Slight modifications to the 1.4 manual to take into account the new menu...
Another few manual changes for the 1.4 manual