Namespaced all unit tests correctly
#6579 and #5052 Anonymize IP addresses on 2 bytes by default
Indicate  user to composer update when network library not yet updated refs #6517
we require PHP >= 5.3.3 not PHP >
Updated composer dependencies
Added legal notice for Piwik components
Cleaned up the update script for 2.9.0-b1
Merge branch 'master' into installation_privacy_options
#5052 Enabled IP anonymization by default. To keep it disabled on previous Piwik installs, a migration script disable it on upgrade to 2.9.