Compact contact list cosmetic tweeks

[Aztek92]

Hi, jumping from native telegram I've some issues with styling on Unigram. You may say Unigram does it differently, I say it does it worse and can be updated.

So, my issues are:

1. Scrollbar on the contact list is visible all the time. Looks rather not okay, when you can see only profile pictures and highlighted background is cut by it.
2. 'Archived' folder needs to be ditched. Let us access it by button like 'Light/Night mode' or just move it to the very bottom, when there are no notifications.
3. Burger menu above compact contact list is asymetric ;-; Please, make it bigger, center it to not look so off.

That's it. A little offtop, but I'm following Unigram since very early builds and I'm really impressed how it's going. Good job!