Rename TYPO3 to TYPO3 CMS and fix website domain

The current brand name is TYPO3 CMS.

In the TYPO3 ecosystem, three distinct products exists :
 - TYPO3 CMS
 - TYPO3 Neos
 - TYPO3 Flow
Adding TYPO3 Flow and TYPO3 Neos applications.
Adding version detection of "TYPO3 Flow".
Merge pull request #521 from lcherpit/patch-1

Rename TYPO3 to TYPO3 CMS + add FLOW and NEOS apps