This patch fixes two issues with the loading of metadata for the mediawiki plugin

Reproducible: Always

Steps to Reproduce:
1. In digikam, select two pictures for export to mediawiki, the first one (pic1) with geolocation in its metadata, the second one (pic2) without.
2. In the mediawiki export dialog, add one picture (pic3) managed by digikam into the export list

Actual Results:  
1. Both pictures, pic1 and pic2, get the geolocation from pic1.  This is because the loop in WmWidget::loadImageInfoFirstLoad does not clear the lat / lon data between iterations.
2. Pic3 will not contain the metadata from digiKam, because WmWidget::loadImageInfoFirstLoad is only called for the initial list of pictures.

Expected Results:  
1. The geolocation for pic2 should remain blank.
2. Metadata for pic3 should be loaded from digikam.

Patch file:
====
diff --git a/mediawiki/wmwidget.cpp b/mediawiki/wmwidget.cpp
index d08c67c..64ccd22 100644
--- a/mediawiki/wmwidget.cpp
+++ b/mediawiki/wmwidget.cpp
@@ -781,56 +781,54 @@ void WmWidget::loadImageInfoFirstLoad()
 {
     KUrl::List urls = d->imgList->imageUrls(false);
 
-    QString title;
-    QString date;
-    QString description;
-    QString currentCategories;
-    QString latitude;
-    QString longitude;
-
     d->imagesDescInfo.clear();
 
-    for(int j = 0; j < urls.size(); j++)
+    for (int j = 0; j < urls.size(); j++) 
     {
-        KPImageInfo info(urls.at(j).path());
-        QStringList keywar = info.keywords();
-        date               = info.date().toString(Qt::ISODate);
-        date               = date.replace("T", " ", Qt::CaseSensitive);
-        title              = info.name();
-        description        = info.title();
-        currentCategories  = "";
-
-        for( int i = 0; i < keywar.size(); i++)
-        {
-            if(i == keywar.size()-1)
-            {
-                currentCategories.append(keywar.at(i));
-            }
-            else
-            {
-                currentCategories.append(keywar.at(i)).append("\n");
-            }
-        }
+        loadImageInfo(urls.at(j));
+    }
+}
 
-        if(info.hasLatitude())
+void WmWidget::loadImageInfo(const KUrl url)
+{
+    KPImageInfo info(url.path());
+    QStringList keywar = info.keywords();
+    QString date       = info.date().toString(Qt::ISODate).replace("T", " ", Qt::CaseSensitive);
+    QString title      = info.name();
+    QString description = info.title();
+    QString currentCategories  = "";
+    QString latitude = "";
+    QString longitude = "";
+
+    for (int i = 0; i < keywar.size(); i++) 
+    {
+        if (i == keywar.size() - 1)
         {
-            latitude = QString::number(info.latitude(), 'f', 9);
-        }
-
-        if(info.hasLongitude())
+            currentCategories.append(keywar.at(i));
+        } else 
         {
-            longitude = QString::number(info.longitude(), 'f', 9);
+            currentCategories.append(keywar.at(i)).append("\n");
         }
+    }
 
-        QMap<QString, QString> imageMetaData;
-        imageMetaData["title"]       = title;
-        imageMetaData["date"]        = date;
-        imageMetaData["categories"]  = currentCategories;
-        imageMetaData["description"] = description;
-        imageMetaData["latitude"]    = latitude;
-        imageMetaData["longitude"]   = longitude;
-        d->imagesDescInfo.insert(urls.at(j).path(), imageMetaData);
+    if (info.hasLatitude()) 
+    {
+        latitude = QString::number(info.latitude(), 'f', 9);
+    }
+
+    if (info.hasLongitude()) 
+    {
+        longitude = QString::number(info.longitude(), 'f', 9);
     }
+
+    QMap<QString, QString> imageMetaData;
+    imageMetaData["title"]       = title;
+    imageMetaData["date"]        = date;
+    imageMetaData["categories"]  = currentCategories;
+    imageMetaData["description"] = description;
+    imageMetaData["latitude"]    = latitude;
+    imageMetaData["longitude"]   = longitude;
+    d->imagesDescInfo.insert(url.path(), imageMetaData);
 }
 
 void WmWidget::clearEditFields()
@@ -847,8 +845,14 @@ void WmWidget::slotLoadImagesDesc(QTreeWidgetItem* item)
 {
     QList<QTreeWidgetItem*> selectedItems = d->imgList->listView()->selectedItems();
     KPImagesListViewItem* l_item          = dynamic_cast<KPImagesListViewItem*>(item);
-    QMap<QString, QString> imageMetaData  = d->imagesDescInfo[l_item->url().path()];
-
+    QMap<QString, QString> imageMetaData;
+  
+    if (!d->imagesDescInfo.contains(l_item->url().path())) 
+    {
+        loadImageInfo(l_item->url());
+    }
+    imageMetaData  = d->imagesDescInfo[l_item->url().path()];
+        
     d->titleEdit->setText(imageMetaData["title"]);
     d->dateEdit->setText(imageMetaData["date"].replace("T", " ", Qt::CaseSensitive));
     d->latitudeEdit->setText(imageMetaData["latitude"]);
diff --git a/mediawiki/wmwidget.h b/mediawiki/wmwidget.h
index c2f971d..f623651 100644
--- a/mediawiki/wmwidget.h
+++ b/mediawiki/wmwidget.h
@@ -96,6 +96,7 @@ public:
     void readSettings(KConfigGroup& group);
     void saveSettings(KConfigGroup& group);
     void loadImageInfoFirstLoad();
+    void loadImageInfo(const KUrl url);
     void clearEditFields();
 
 Q_SIGNALS:
====