kwalitee: fix imports of package components
kwalitee: fix imports of package components

* Plugged back explicit imports of module.submodule components that were not
  exported by the mother module implicitly, fixing a problem introduced in
  recent badzil/code-quality branch merge.  (closes #256)

inveniosoftware/invenio-base,inveniosoftware/invenio-base,tiborsimko/invenio-base,tiborsimko/invenio-base