Use polygon as data source for intersection

- Use polygon as data source for intersection
- Add padlock icon
- Show padlock icon on read only polygons
- Add Fwk function appendMenuItems() to make it possible to define context menu content in a PdmObject
- Context menu "Create Polygon Intersection"
- Updates to make visualization consistent with object and object collection enabled state

ApplicationExeCode/Resources/ResInsight.qrc

@@ -277,14 +277,15 @@
         <file>SeismicDelta16x16.png</file>
         <file>SeismicView16x16.png</file>
         <file>SeismicView24x24.png</file>
-		<file>SeismicViews24x24.png</file>
-		<file>SeismicData24x24.png</file>
-		<file>SeismicSection16x16.png</file>
-		<file>Fullscreen.png</file>
+        <file>SeismicViews24x24.png</file>
+        <file>SeismicData24x24.png</file>
+        <file>SeismicSection16x16.png</file>
+        <file>Fullscreen.png</file>
         <file>plot-template-standard.svg</file>
         <file>plot-template-ensemble.svg</file>
         <file>decline-curve.svg</file>
         <file>regression-curve.svg</file>
+        <file>padlock.svg</file>
     </qresource>
     <qresource prefix="/Shader">
         <file>fs_CellFace.glsl</file>

ApplicationExeCode/Resources/padlock.svg

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Uploaded to: SVG Repo, www.svgrepo.com, Generator: SVG Repo Mixer Tools -->
+<svg fill="#000000" height="800px" width="800px" version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" 
+	 viewBox="0 0 485 485" xml:space="preserve">
+<g>
+	<path d="M345,175v-72.5C345,45.981,299.019,0,242.5,0S140,45.981,140,102.5V175H70v310h345V175H345z M170,102.5
+		c0-39.977,32.523-72.5,72.5-72.5S315,62.523,315,102.5V175H170V102.5z M385,455H100V205h285V455z"/>
+	<path d="M227.5,338.047v53.568h30v-53.569c11.814-5.628,20-17.682,20-31.616c0-19.299-15.701-35-35-35c-19.299,0-35,15.701-35,35
+		C207.5,320.365,215.686,332.42,227.5,338.047z"/>
+</g>
+</svg>