6926: remove redundant cal prefixes in FR

these are automatically populated by the prefix table building code

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@23346 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
fix RU translation of WebCal

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@23351 4ae1f11a-8b86-4847-b8af-ab372f36d1fd