Right panel not refreshed accordingly

Describe the bug
I notice there's a bug with the refreshing of the right panel. Ideally it should refresh with the updated feature points every time when I add a new point or when I click a different image in the image-slider, but now, the panel only refreshes when I move the 'feature rectangle' with the move tool.

To Reproduce
Steps to reproduce the behavior:

1. Load an image
2. Add some feature points to the image, you won't see the feature points in right panel
3. If you move the feature rectangle with the move tool then the right panel will be refreshed
4. Same thing happens when you load another image and switch around images in image-slider. Ideally the right panel should be refreshed according to image.

Screenshots
This screencast is taken from 'http://imglab.ml/', not my local setup

Console Errors
There's no console error

Device detail
(please complete the following information):

• OS: xubuntu 18.04
• Browser: Chromium 68.0.3440.106

Additional context
I suspect this is just due to right panel not being remounted when necessary, I will look into when I have the time.. or @amitguptagwl has any idea?

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Reproduce the issue by adding feature points and switching images in the image-slider, then compare the right-panel behavior with moving the feature rectangle using the move tool. Trace the refresh entry points for these actions; done means the panel updates for new points and displays the selected image's feature points without requiring the move tool.