Theorically all of those imports were tested by unit testing, but we've got no inssurance about that.
And even if unit tests had check for syntax errors, all pieces of code were not tested. We cannot
be sure that an import was missed or forgotten...

Removed useless readonly property on some fields

Add master = true to uwsgi.ini

Add the custom message provided by HttpException to the template

Before when session restore fails the webui was answering "Unknown status 200" as content.
Now it produce 2 log messages (maybe)

broken nginx conf + absolute path in slim that is known only at build time

using --plugin option instead of uwsgi_python3 shortcut (can be uwsgi_python34 etc)

Adds a LODEL2LOGDIR to buildconf.py
Adds a nginx-conf option to slim
...

Now create an INSTANCE_NAME.sock in @localstatedir@/uwsgi_sockets
Note : the localstatedir is wrong -_- /usr/var instead of /var........

Using execl instead of fork to preserv the pid

SLIM is now able to edit configuration from CLI, to start instances etc.