BibFormat: replace language when using cache
BibFormat: replace language when using cache

* Try to replace possible language links when using pre-formatted
  formats with other UI languages when
  CFG_BIBFORMAT_DISABLE_I18N_FOR_CACHED_FORMATS is set.  May lead
  to some false positives, see comment in the code.

tiborsimko/invenio-formatter,tiborsimko/invenio-formatter,inveniosoftware/invenio-formatter,tiborsimko/invenio-formatter,inveniosoftware/invenio-formatter,inveniosoftware/invenio-formatter