[nodes] PanoramaPostProcessing: Fix "previewSize"'s range

- Fixed the range of the "previewSize" parameter: since its step was set
to 5000, it could only be set to 0 or 1000. It can now be set from 0 to
5000 with steps of 100 pixels;
- Fixed the case of the "previewSize" and "outputPanoramaPreview";
- Improved the description of "previewSize", and added descriptions for
"outputPanorama" and "outputPanoramaPreview".

meshroom/nodes/aliceVision/PanoramaPostProcessing.py

@@ -33,10 +33,10 @@ Post process the panorama.
         ),
         desc.IntParam(
             name='previewSize',
-            label='Panorama preview Width',
+            label='Panorama Preview Width',
-            description='Choose the output preview width (in pixels).',
+            description='The width (in pixels) of the output panorama preview.',
             value=1000,
-            range=(0, 1000, 5000),
+            range=(0, 5000, 100),
             uid=[0]
         ),
         desc.ChoiceParam(
@@ -63,15 +63,15 @@ Post process the panorama.
         desc.File(
             name='outputPanorama',
             label='Output Panorama',
-            description='',
+            description='Generated panorama in EXR format.',
             semantic='image',
             value=desc.Node.internalFolder + 'panorama.exr',
             uid=[],
         ),
         desc.File(
             name='outputPanoramaPreview',
-            label='Output Panorama preview',
+            label='Output Panorama Preview',
-            description='',
+            description='Preview of the generated panorama in JPG format.',
             semantic='image',
             value=desc.Node.internalFolder + 'panoramaPreview.jpg',
             uid=[],