[GSoC] Comments in Sidebar Deck: Weekly Update

[Mohit Marathe]

Hello everyone,

I spent the previous week working on getting `CommentsPanel` to 
respond to different events, such as editing, deleting, or resolving 
post-it notes.
In that, I'm just forwarding the hint that `SwPostItMgr` receives (and 
after its done with the processing) to `CommentsPanel`, where it 
handles the updating of comments in the sidebar.
I had a meet with my mentor, where we discussed some of my
approaches, where he suggested some improvements.

I noticed a bug that happens after undo of deletion of comment.
I'm working on resolving that currently.

Thanks,
Mohit