Simplify SSHPageTestCase by creating user dict
Change get_{sftp,ssh}_connection to get_{sftp,ssh}_connection_obj
Add another error type
Update styling of the common errors page
Fix typo in common errors
Up the required version of paramiko

This is to remove random exceptions from paramiko when it closes.
Exception in thread Thread-1 (most likely raised during interpreter
shutdown)

This is the commit that the fix was added in.
https://github.com/paramiko/paramiko/commit/8f9b37add
Fix typos in chemtools.ml
Add tests for getting names from feature vectors
Add test for get_feature_vector3