Add FIBL app, support bespoke frontpage and layout

VIPSWeb/local_settings_sample.py

VIPSWeb/settings.py

VIPSWeb/static/css/vipsweb.css

VIPSWeb/templates/base.html

fibl/__init__.py

fibl/admin.py

fibl/apps.py

fibl/migrations/__init__.py

fibl/models.py

fibl/static/fibl/css/fibl.css

fibl/static/fibl/images/fibl_logo.png

fibl/templates/fibl/fibl_base.html

fibl/templates/fibl/index.html

fibl/tests.py

fibl/urls.py

fibl/views.py