Improve bottom bar according to spec
Indent
Better handling of html templates/partials in make

Partial/template html files in src directory are no searched by
make automatically (no need to add them manually to the makefile).
They have to have the `*.html` endinng and must be in a path
containing the `partials` directory.

The copy process now works with multiple partials.
Merge pull request #87 from geoadmin/dev_make_templates

Better handling of html templates/partials in make
Improve prerequisite handling of partials/templates

Now each file in app-prod depends only on the corresponding
partial of the app directory using a static pattern rule.
No need for APP_TEMPLATES_SRC in Makefile

And APP_PROD_TEMPLATE_FILES is a better name than APP_TEMPLATES_DEST. More consistent with the other variable names.
Merge pull request #88 from geoadmin/dev_make_partials_improve

Improve prerequisite handling of partials/templates
Merge pull request #81 from geoadmin/dev_bottombar2

Dev bottombar2
Make is now aware of changes in any *.less files
Merge pull request #86 from geoadmin/dev_make_less

Make is now aware of changes in any *.less files