Styles names, as shown in the sidebar in Calc, are not localizable.
Steps to Reproduce:
1. Open new spreadsheet in Calc.
2. Open sidebar and its Styles and Formatting deck
The names of styles are in English (although LO is 100 % localized).
Those names would be in Slovenian.
User Profile Reset: No
Currently set to macOS, but probably same problem on all OS'.
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:57.0) Gecko/20100101 Firefox/57.0
Created attachment 138430 [details]
Screenshot of Sidebar in Calc
The only exception is the Default style that appears localized ("Privzeto" in Slovenian).
*** This bug has been marked as a duplicate of bug 105429 ***