Move chem utility functions to utils module
Update Vagrantfile to auto include the test ssh key
Comment out test_get_job_list_auth to remove the db error

There is an bug with sqlite, django tests, and threading
return Database.Cursor.execute(self, query, params)
DatabaseError: no such table: cluster_cluster

Here is the relevant bug
https://code.djangoproject.com/ticket/12118
Add change get_molecule_warnings to work for single names

This also adds get_multi_molecule_warnings for use with multiple
names.