LRDOCS-742: Update gadget URLs, minor edits, and image updates for 6.2
LRDOCS-742: Update Gadget Editor content for 6.2
LRDOCS-742: Renumbered images and added comments
LRDOCS-742: Mention PubSub deprecation for Google gadgets and note "in progress" status for outdated Google API example references
Merge branch 'opensocial-dev-guide2' of https://github.com/codyhoag/liferay-docs into opensocial-dev-guide2
Merge pull request #709 from jhinkey/opensocial-dev-guide2

6.2 Opensocial dev guide update