fixed typo in readme to really produce symlink
fix readme - symbolic link to ../app/media/images instead of ../media/images

The latter created a symlink loop :/
fix location of version specific config files -

they should be in active/.xxx.config and passive/.xxx.config not
active/www/.xxx.config ...
fix tileserver url - show the map

The tileserver url had a typo and thus the base map was not shown.
Add `template_package_dirs` to `_defaults`

Redefine `Babel` to augment `_package_dirs`
Change Z-Index of header > .pure-menu

This prevents the leaflet-control glitch - where the leaflet controls would
show on top of the navigation.