Shutter is not getting installed in Ubuntu 16.04 due to unmet dependencies

Solution 1:

Thanks to the hints from @George, I was able to finally install shutter. I disabled all the repositories in the list mentioning precise. Surprisingly every repository has mention of it, replaced it with the following list

###### Ubuntu Main Repos
deb http://us.archive.ubuntu.com/ubuntu/ xenial main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial main restricted universe multiverse 

###### Ubuntu Update Repos
deb http://us.archive.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse 
deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates main restricted universe multiverse 
deb http://us.archive.ubuntu.com/ubuntu/ xenial-proposed main restricted universe multiverse 
deb http://us.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-updates main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-proposed main restricted universe multiverse 
deb-src http://us.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse 

Then again try the sudo apt-get update and then sudo apt-get install shutter to successfully install it.