Add a select by expression dialog.

Allow to change the current selection based on a QgsExpression
* Select (clear and select)
* Add to selection
* Remove from selection
* Select within selection (Intersect)

images/images.qrc

@@ -186,10 +186,6 @@
         <file>themes/default/mActionZoomOut.png</file>
         <file>themes/default/mActionZoomToLayer.png</file>
         <file>themes/default/mActionZoomToSelected.png</file>
-        <file>themes/default/mActionIncreaseBrightness.svg</file>
-        <file>themes/default/mActionDecreaseBrightness.svg</file>
-        <file>themes/default/mActionIncreaseContrast.svg</file>
-        <file>themes/default/mActionDecreaseContrast.svg</file>
         <file>themes/default/mIconClose.png</file>
         <file>themes/default/mIconCollapse.png</file>
         <file>themes/default/mIconConnect.png</file>
@@ -279,13 +275,11 @@
         <file>themes/default/symbologyUp.png</file>
         <file>themes/default/tracking.png</file>
         <file>themes/default/transformed.png</file>
-        <file>themes/default/transp-background_8x8.png</file>
         <file>themes/default/user.png</file>
         <file>themes/default/mActionAddHtml.png</file>
         <file>themes/gis/mActionAddArrow.png</file>
         <file>themes/gis/mActionAddBasicShape.png</file>
         <file>themes/gis/mActionAddGPSLayer.png</file>
-        <file>themes/gis/mActionAddHtml.png</file>
         <file>themes/gis/mActionAddImage.png</file>
         <file>themes/gis/mActionAddPart.png</file>
         <file>themes/gis/mActionAddLayer.png</file>
@@ -323,7 +317,6 @@
         <file>themes/gis/mActionDeleteVertex.png</file>
         <file>themes/gis/mActionDeselectAll.png</file>
         <file>themes/gis/mActionDraw.png</file>
-        <file>themes/gis/mActionDuplicateComposer.png</file>
         <file>themes/gis/mActionEditCopy.png</file>
         <file>themes/gis/mActionEditCut.png</file>
         <file>themes/gis/mActionEditPaste.png</file>
@@ -360,7 +353,6 @@
         <file>themes/gis/mActionNewComposer.png</file>
         <file>themes/gis/mActionNewVectorLayer.png</file>
         <file>themes/gis/mActionNodeTool.png</file>
-        <file>themes/gis/mActionOffsetCurve.png</file>
         <file>themes/gis/mActionOpenTable.png</file>
         <file>themes/gis/mActionPan.png</file>
         <file>themes/gis/mActionPanToSelected.png</file>
@@ -373,7 +365,6 @@
         <file>themes/gis/mActionReshape.png</file>
         <file>themes/gis/mActionRollbackAllEdits.svg</file>
         <file>themes/gis/mActionRollbackEdits.svg</file>
-        <file>themes/gis/mActionRotateFeature.png</file>
         <file>themes/gis/mActionRotateLabel.png</file>
         <file>themes/gis/mActionRotateLabel.svg</file>
         <file>themes/gis/mActionSaveAsPDF.png</file>
@@ -411,10 +402,6 @@
         <file>themes/gis/mActionZoomOut.png</file>
         <file>themes/gis/mActionZoomToLayer.png</file>
         <file>themes/gis/mActionZoomToSelected.png</file>
-        <file>themes/gis/mActionIncreaseBrightness.svg</file>
-        <file>themes/gis/mActionDecreaseBrightness.svg</file>
-        <file>themes/gis/mActionIncreaseContrast.svg</file>
-        <file>themes/gis/mActionDecreaseContrast.svg</file>
         <file>themes/gis/mIconClose.png</file>
         <file>themes/gis/mIconEditable.png</file>
         <file>themes/gis/mIconEditableEdits.png</file>
@@ -426,8 +413,7 @@
         <file>themes/gis/plugins/copyright_label.png</file>
         <file>themes/gis/plugins/delimited_text.png</file>
         <file>themes/gis/plugins/dxf2shp_converter.png</file>
-        <file>themes/gis/plugins/gps_importer/create_gpx.png</file>
-        <file>themes/gis/plugins/gps_importer/import_gpx.png</file>
+        <file>themes/gis/plugins/gps_importer.png</file>
         <file>themes/gis/plugins/interpolation.png</file>
         <file>themes/gis/plugins/mapserver_export.png</file>
         <file>themes/gis/plugins/mGeorefRun.png</file>
@@ -535,8 +521,12 @@
         <file>flags/sr_Latn.png</file>
         <file>flags/sw.png</file>
         <file>flags/eu_ES.png</file>
-        <file>flags/ml_IN.png</file>
-        <file>flags/km.png</file>
+        <file>themes/gis/mIconExpressionFilter.svg</file>
+        <file>themes/gis/mIconExpressionPreview.svg</file>
+        <file>themes/gis/mIconExpressionSelect.svg</file>
+        <file>themes/gis/mIconSelectAdd.svg</file>
+        <file>themes/gis/mIconSelectIntersect.svg</file>
+        <file>themes/gis/mIconSelectRemove.svg</file>
     </qresource>
     <qresource prefix="/images/tips">
         <file alias="symbol_levels.png">qgis_tips/symbol_levels.png</file>