Documentation can now be placed in a subfolder.

Just add the `baseUrl` key in your Gruntfile in the `docular` section.
Documentation can now be placed in a subfolder.

The `<base href/>` tag is now directly integrated into the index.html
file, and replaced with the right value (coming from Gruntfile.js) when
the webapp is generated.
Merge remote-tracking branch 'subfolder/master'

Conflicts:
	lib/webapp/resources/js/docs_module_begin.js