Sync PostGIS (7.x-1.1) - en to cs translation catalogue (2 entries)

en: Cannot add index %name to table %table: table doesn't exist.
cs: Nelze přidat index %name do tabulky %table: tabulka neexistuje.

en: Cannot add index %name to table %table: index already exists.
cs: Nelze přidat index %name do tabulky %table: index již existuje.
