quick fick for Convert-from-nuget & Init-auto-restore
Merge pull request #342 from theimowski/master

quick fick for Convert-from-nuget & Init-auto-restore
RELEASE_NOTES
reading Nuget pass, cleanup
added CredsMigration DU
saving migrated credentials
cleanup - extract GetAllPackageSources member
Cleanup - Moved ParseAuth member to PackageSources module
Cleanup - extract packagesource parsing to the dedicated module
save credentials on convert
do not overwrite password in config file