GUI: switch to uniform yyyy-mm-dd representation of date (instead of a locale-sensitive one in some places)

src/query/reslistpager.cpp

@@ -158,11 +158,7 @@ void ResListPager::displayDoc(RclConfig *config,
 	time_t mtime = doc.dmtime.empty() ?
 	    atol(doc.fmtime.c_str()) : atol(doc.dmtime.c_str());
 	struct tm *tm = localtime(&mtime);
-#ifndef sun
 	strftime(datebuf, 99, " %Y-%m-%d %H:%M:%S %z", tm);
-#else
-	strftime(datebuf, 99, " %Y-%m-%d %H:%M:%S %Z", tm);
-#endif
     }
 
     // Size information. We print both doc and file if they differ a lot