Bibarchive: DB API Regression Test

* Test class complete...

...Tests the connection and querying of the database.

bleh
Bibarchive: Create Bagit

* Bagit folder created/navigated to in /opt/invenio/var/tmp/bagit

* File paths are found by Docfile_Retriver.get_file_urls()
Bibarchive: Create Bagit

* Folder for bag create in /opt/invenio/var/tmp/bagit/---

...copying of files still needs to be achieved!