Update version identifiers for 4.0.0-beta.2

Updated package files

The package files (bower, npm, etc.) now point to the new
distribution locations, and have the beta version numbers in place.
The version number has been removed from the `bower.json` and
`composer.json` files as they will retrieve the version numbers
from Git.

tagged version 3.5.2

tagged version 3.5.1

tagged version 3.5.0

tagged version 3.4.8

tagged version 3.4.7

tagged version 3.4.6

tagged version 3.4.5

tagged version 3.4.4