Allow private github repos, improve repo creation process

[kyprifog]

After github login hacklily errors with repo not being able to be made. I think you have to have a sheet-music public repo . It used to be you could save private github repos, I know because I have a private repo that has alot of stuff in it from hacklily. I was actually using this tool pretty consistently at that time, and was going to use it again. Why the switch to public only?

[jocelyn-stericker]

It was switched due to a user request, they weren't comfortable giving Hacklily access to private code.

I need to update the GitHub integration, and I think allowing access to specific repos is something that is now possible, so I'll try to do that as part of updating the GitHub integration.