Deprecation: #67029 - Deprecate page.bgImg option 

See forge#67029

Description 

The option page.bgImg has been marked for deprecation and will be removed with TYPO3 CMS 8.

Impact 

Using page.bgImg will throw a deprecation message.

Affected Installations 

Any installation which uses this TypoScript option.

Migration 

Use CSS to set a background on the body.