Add GitHub link

[az0ran]

Hi, I think that under the KashCal version should be github icon/link to repo and license, these things are handy

[one-kash]

we are trying to make it look more like a consumer facing app - if you click on left hamburger icon -> all the way in the end -> help & docs goes to our website and people and jump to GitHub from there. (for development focused who are interested)

I am not sure whether there is any additional value, for users, to see a separate GitHub link

[az0ran]

Okay, that path where user goes from hamburger to help and docs, to your website seems more reasonable