Added a command-line option to regenerate collection cache pages in a certain language only.
Added a command-line option to regenerate collection cache pages in a
certain language only.

inveniosoftware/invenio-search,tiborsimko/invenio-records,inveniosoftware/invenio-records,inveniosoftware/invenio-search,tiborsimko/invenio-search,tiborsimko/invenio-records,tiborsimko/invenio-search,inveniosoftware/invenio-records