L10n update

* [INTL:pt] Portuguese translation for debconf messages
  (Closes: #753907)
* [INTL:ru] Russian debconf templates translation
  (Closes: #756644)
[INTL:de] Initial German debconf translation (Closes: #757519)
[INTL:da] Danish translation of the debconf templates lava- server (Closes: #757651)
[INTL:fr] French debconf templates translation (Closes: #757709)
[INTL:es] Spanish translation of debconf messages (Closes: #757894)
[l10n:cs] Initial Czech translation of PO debconf template for lava-server (Closes: #758018)
[INTL:it] Italian translation of debconf messages (Closes: #758028)
[INTL:pt_BR] Brazilian Portuguese debconf templates translation (Closes: #757728)
[debconf_rewrite] Debconf templates and debian/control review completed. (Closes: #754149)