LRDOCS-745 Updated Marketplace chapter of Dev Guide up to the PACL section
LRDOCS-745 Reviewed Marketplace chapter of DevGuide from beginning of PACL section to end of chapter
Merge branch 'LRDOCS-745' of https://github.com/jrao/liferay-docs into LRDOCS-745
LRDOCS-745 Format listing of app manager tab definitions.
LRDOCS-745 Update navigation to liferay.com user homepage.
LRDOCS-745 Explain how to register as a Marketplace developer.
Merge pull request #696 from jhinkey/LRDOCS-745

LRDOCS-745 DevGuide Marketplace 6.2 update