Comment column is too long in 'check status' during upload

[cjchirag7]

Describe the bug
Due to the comment column containing a huge content, the UI of the table is badly affected by this.
The user needed to scroll down by very large, and then, scroll to the right, in order to see the preview of the slide.

To Reproduce
Steps to reproduce the behavior:

1. Go to slides page
2. Click on Upload
3. Upload any slide
4. Click on 'Check' button

Expected behavior
A 'show more' option can be created to show the whole content to the user, only when the user needs it.

Screencast

Desktop (please complete the following information):

• OS: Ubuntu
• Browser: Chrome
• Version 81.0.4044.92 (Official Build) (64-bit)

[cjchirag7]

Closes by #377