* Move Some controllers from core folders to CentreonMain module
    * Improve less parsing with possibility to activate cache and compression if "prod" env is set in centreon.ini
    * Refactoring of Router class in core to use cache
    * Update Desarrola2/Cache requirement from version 1.7.0 to 1.8.0
    * Replace login background image less value by a less variable (todo: add possibility for user to change this background image)
    * Update oyejorge/less.php requirement from version 1.6.x to 1.7.x
Merge branch 'master' of http://git.centreon.com/centreon