added separate search options for the layers feature

conf/okular.kcfg

@@ -26,6 +26,14 @@
    <default>false</default>
   </entry>
  </group>
+ <group name="Layers" >
+  <entry key="LayersSearchCaseSensitive" type="Bool">
+   <default>false</default>
+  </entry>
+  <entry key="LayersSearchRegularExpression" type="Bool">
+   <default>false</default>
+  </entry>
+ </group>
  <group name="Reviews" >
   <entry key="ReviewsSearchCaseSensitive" type="Bool">
    <default>false</default>

ui/layers.cpp

@@ -78,8 +78,8 @@ void Layers::notifySetup( const QVector< Okular::Page * > & /*pages*/, int /*set
 
 void Layers::saveSearchOptions()
 {
-    Okular::Settings::setContentsSearchRegularExpression( m_searchLine->regularExpression() );
-    Okular::Settings::setContentsSearchCaseSensitive( m_searchLine->caseSensitivity() == Qt::CaseSensitive ? true : false );
+    Okular::Settings::setLayersSearchRegularExpression( m_searchLine->regularExpression() );
+    Okular::Settings::setLayersSearchCaseSensitive( m_searchLine->caseSensitivity() == Qt::CaseSensitive ? true : false );
     Okular::Settings::self()->writeConfig();
 }