Fixes #3987 - Add informations about the upgrade of Rudder to version 2.8
Merge pull request #30 from nperron/ust_3986/doc/3987_add_info_about_migration_to_Rudder_2.8

Fixes #3987 - Add informations about the upgrade of Rudder to version 2.8
Fixes #3963: Explains how to search for user for LDAP authentication
Merge pull request #29 from fanf/bug_3963/allows_ldap_search_for_ldap_authn

Fixes #3963: Explains how to search for user for LDAP authentication
Merge branch 'branches/rudder/2.4' into branches/rudder/2.6
Merge branch 'branches/rudder/2.6' into branches/rudder/2.7
Merge branch 'branches/rudder/2.7'
Revert "Fixes #3987 - Add informations about the upgrade of Rudder to version 2.8"

This reverts commit 76b648a9f0e9236c21625b7891fc8c51980406b6.
Fixes #3987 - Add informations about the upgrade of Rudder to version 2.8
Merge pull request #32 from nperron/bug_3987/doc/add_upgrade_to_2_8_infos

Fixes #3987 - Add informations about the upgrade of Rudder to version 2.8