--User changes

-Allow for saving EXR as full 31-bit float per component per pixel.
 -Allow for saving the output from the final render dialog as a different image format without starting the rendering process over.

--Code changes:
 -Make StripsRender() handle memsetting the final output image so calling code no longer has to.
 -Make FinalRenderEmberController<T>::SaveCurrentRender() return the path that the image was actually saved to.

Source/Fractorium/OptionsDialog.ui

@@ -524,7 +524,7 @@
           <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Save each RGBA component as 16-bits when saving Png files.&lt;/p&gt;&lt;p&gt;This leads to greater color precision for use in high end rendering and display on HDR monitors, however it makes the file size larger.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
          </property>
          <property name="text">
-          <string>Save 16-bit Png</string>
+          <string>Save 16-bit Png/32-bit Exr</string>
          </property>
         </widget>
        </item>