migrate.ps1: fetched changes with conf check only when not post-installing
lib_config.ps1: added the mean to load standard .properties file and to save it.
enriched default for the configuration properties to have similar dar configuration as the upgrade
new: lib_dars.ps1 to manage dars and lib_jms.ps1 to update the docbase registration against a jms
merged with origin
Merge branch 'master' of https://github.com/thebluemountain/solvay-cs-migrate

Conflicts:
	bin/lib_config.ps1
	bin/migrate.ps1