SwiftMetaData dir is now a session variable.
Removed some lines
Using stored sessionconfig to update the defaults. Allows us to add new
config variables.
SwiftDownloadImpl bug.
Small bug for swift reseeds
SwiftDownloadImpl resets metadatadir if same as default one.
Fix for renaming session metadir
Merge pull request #183 from NielsZeilemaker/fix_metadatadir

Fix metadatadir, waited long enough for meta-review