Better error messages when importing apps.
Removed useless settings entry in defaults.
Merge branch 'project-hiroshima' of github.com:Freevle/Freevle into project-hiroshima

Conflicts:
	freevle/__init__.py
Merge branch 'project-hiroshima' of github.com:Freevle/Freevle into project-hiroshima
Added testing framework and travis config.