Add information on PHP 5.5 and APCu
PIM-1999: Add users entity as loaded fixtures
PIM-1999: Temporary commit to remove user creation from installer
PIM-1999: First implementation and data set for user data fixtures
PIM-1999: Remove user creation in install command
PIM-1999: Create more users
PIM-1999: Create users fixtures for all installer_data
PIM-1999: Add php documentation for LoadUserData class
PIM-1999: Remove useless class to load user data
PIM-1999: Clean code in user fixtures loader
PIM-1999: Update user data sets
Add new methods in CategoryManager
PIM-1999: Update LoadUserData to work with new method getTreeByCode
PIM-1999: Update CHANGELOG.md
PIM-1999: Clean code in installer command
Merge pull request #761 from akeneo/PIM-1999

PIM-1999: Create our personas as user
Revert "PIM-1999: Remove useless class to load user data"

This reverts commit c03fd33f0266c9f2a352d00b34ec07a60752e9b5.
Merge branch 'master' into PIM-1850