Update virtual-machines-ruby-rails-web-app-linux.md

Another small typo relating to the port for the rails server.
Merge pull request #2552 from WindowsAzure/AUX41

Aux41
Merge pull request #2573 from WindowsAzure/AUX41

Aux41
Merge pull request #2592 from WindowsAzure/AUX41

Aux41
Fix case-sensitivity errors in the role name.
Fix several MSDN links that broke Markdown parsing.
update tutorial
Merge pull request #2614 from tdykstra/working

update tutorial - changes from Rick Anderson
Updating continuous delivery articles phase 1
Adding new topic web-sites-traffic-manager and fixes for backup and restore topics
Merge pull request #2621 from timamm/timammAUXpr41

Adding new topic: web-sites-traffic-manager + updates for backup and restore topics
Merge pull request #2622 from ghogen/master

Updating continuous delivery articles phase 1
Merge branch 'AUX41' into AUX402

Conflicts:
	articles/web-sites-backup.md
Merge pull request #2624 from WindowsAzure/AUX41

Aux41
Change capitalization of .png extension
Change capitalization of .png extension
Merge pull request #2625 from ghogen/master

The capitalization difference with the PNG extension was causing the publishing to fail.
Minor edits and updates for 4.1
Merge pull request #2626 from timamm/timammAUXpr41

Minor edits and updates for 4.1
RD Bug link fixes 1307242 & 1307201