Tools wordsmith

Hi Rich, These changes have been reviewed by Russ and are ready for trunk:
- Update Maven section for 6.2
- Fix and move API deprecation policy section to the APIs chapter
- Remove an unneeded project import section from tools
- Wordsmithing

https://issues.liferay.com/browse/LRDOCS-797
https://issues.liferay.com/browse/LRDOCS-840