Merge branch 'dev' into 'test'

I think there is a problem with multiple threads creating multiple sessions...

See merge request !85

tes/tunnelstat/__init__.py

@@ -233,6 +233,9 @@ class SSHSession:
         from .. import sshsessions
         from flask import session, request
         import logging
+        import uwsgi
+        uwsgi.lock()
+        
         logger = logging.getLogger()
         sshsessid = session.get('sshsessid', None)
         N = 8
@@ -257,6 +260,7 @@ class SSHSession:
             SSHSession.test_sshsession(sshsession)
 
         sshsession.refresh()
+        uwsgi.unlock()
         return sshsession
 
     @staticmethod