Gui: add parameter to adjust the date format used in the result list

src/query/reslistpager.cpp

@@ -161,7 +161,7 @@ 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);
-	strftime(datebuf, 99, " %Y-%m-%d %H:%M:%S %z", tm);
+	strftime(datebuf, 99, dateFormat().c_str(), tm);
     }
 
     // Size information. We print both doc and file if they differ a lot
@@ -414,3 +414,9 @@ const string &ResListPager::parFormat()
     return cstr_format;
 }
 
+const string &ResListPager::dateFormat()
+{
+    static const string cstr_format(" %Y-%m-%d %H:%M:%S %z");
+    return cstr_format;
+}
+

src/query/reslistpager.h

@@ -106,6 +106,7 @@ public:
     virtual string trans(const string& in);
     virtual string detailsLink();
     virtual const string &parFormat();
+    virtual const string &dateFormat();
     virtual string nextUrl();
     virtual string prevUrl();
     virtual string pageTop() {return string();}