Recent changes broke the 'deb' target building process. Now fixed and
back at work !

Better access to a few variables into the .am files. Allows for single
point of definition of variables required accross various .am.
For concerns separation, may probably switch from Makefile-common.am.inc
to Makefile-multisite.am.inc.

names was set to "sites_datas" isntead of "sites_data"...

Allows creating multisite instances, along with its directories creation
into /var/lodel2

Mongo sux ?

solves #185
typo fixing

added a default value for Subsection parent field

adds a default value to Publication collection field

Previous bugfix on runtest & create instance brokes deployment, now both seems to work fine

concerning unittest & field validators

Fixes problems with plugins

- updated scripts etc
- make tests pass

- Replaced some "hidden" import with LodelContext.expose_modules calls
 - in some functions of Setting, Plugin, validator
 - in loader.py (temporary version)

In this state the tests runs (151 success), I'm able to run an instance (from debian package using slim) in MONOSITE mode and in MULTISITE mode by creating and loading a context in the loader.

Add master = true to uwsgi.ini

Add the possibility to give a fixed name to instances created by mass_deploy