Update virtual-machines-java-run-tomcat-application-server.md

I couldn’t just press connect - i) it wasn't there right away and ii) there wasn't an application associated with rdp files.
Update machine-learning-walkthrough-4-train-and-evaluate-models.md

Updated to match UI for column selector, edited other content.
Add PTVS 2.1 tutorials
Add missing word in create project instruction.
updated groupIds in article
updated Mongoose version, code snippets, Node version, text. 9/17/14
Updated Python Howtos for service bus and storage
Merge pull request #24 from Azure/DailyPub

Update my working branch: dp-cg
Update for 3.1 (YARN) clusters

In Hadoop 2.0, we no longer show the JobTracker component and that same set of data is now available off of the YARN service and the resource manager component
Corrected capitalization
Update storage-use-azcopy.md

Remove extra "/mycontainer" from URL in 3 places.
Remove duplicate headings
Add missing page title
Add missing page title
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Add missing page title
Merge pull request #4899 from Azure/AUX411

Aux411