Jormungandr routing is now modular:
All route files are organised into modules in a "modules" directory.
Modules could be blueprint if need specific templates and static directories.

There is a example in modules which is desactivated by default.

Now the root index is generated dynamicaly instead of hard coded.

Test are updated accordingly
Revert "Merge branch 'routing_modules' of http://apps/git/navitia into dev"

This reverts commit e3d138e8bd0a80f972a49823705a922077934695, reversing
changes made to 4d74d2a6870c6e80d2b82c18a8ba4e9d4f44ff70.
Merge branch 'dev' of http://apps/git/navitia into dev