I18N: infrastructure for Persian (Farsi)

* Adds general support infrastructure for Persian (Farsi)
  translation.  Dynamic elements and PO file will be translated
  in subsequent commits.

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
I18N: initial Persian (Farsi) translation

* Initial translation of dynamic elements (e.g. collection names)
  to Persian (Farsi).  The PO file will be translated in future
  commits.

Co-authored-by: Tibor Simko <tibor.simko@cern.ch>
Signed-off-by: Tibor Simko <tibor.simko@cern.ch>