Allow using scale values less than 1.0 (#9108)

* Change view scale into list of predefined double values in both toolbar and property editor. Add values less than 1.0

ApplicationLibCode/Application/RiaDefines.cpp

@@ -345,3 +345,11 @@ QString RiaDefines::stringListSeparator()
 {
     return "|";
 }
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+std::vector<double> RiaDefines::viewScaleOptions()
+{
+    return { 0.05, 0.1, 0.2, 0.5, 1.0, 2.0, 3.0, 4.0, 5.0, 10.0, 15.0, 20.0 };
+}