Fixes #5767: add extension point for plugins in node details
Fixes #5574: Automatically force cf-serverd to reload its configuration
Merge pull request #617 from ncharles/ust_5571/dev/5574_add_cfengine_reload_promises

Fixes #5574: Automatically force cf-serverd to reload its configuration
Merge pull request #659 from fanf/bug_5767/missing_node_details_plugin_extension_point

Fixes #5767: add extension point for plugins in node details
Merge branch 'branches/rudder/2.6' into branches/rudder/2.10

Conflicts:
	rudder-web/src/main/scala/com/normation/rudder/web/components/ShowNodeDetailsFromNode.scala
Merge branch 'branches/rudder/2.10' into branches/rudder/2.11
Merge branch 'branches/rudder/2.11' into branches/rudder/3.0

Conflicts:
	rudder-core/src/main/scala/com/normation/rudder/services/policies/nodeconfig/NodeConfigurationServiceImpl.scala
	rudder-web/src/main/scala/com/normation/rudder/web/components/ShowNodeDetailsFromNode.scala
	rudder-web/src/main/webapp/templates-hidden/server/server_details.html