Improve node source explanations and examples

[laurentpellegrino]

Some command line examples are invalid:

http://jenkins.activeeon.com/job/documentation/lastSuccessfulBuild/artifact/build/asciidoc/html5/admin/ProActiveAdminGuide.html#_local_infrastructure_manager

Parameters are not introduced in the order they have to be passed to the command line. They should be listed in that specific order and a sentence added to mention that order matters.

Hopefully, parameters and their order can be deduced by looking at the configure method of each infrastructure implementation.

[laurentpellegrino]

Investigate if configuration files could be used for node source creation