Feature: open an issue, edit on github buttons

**Which module(s) and week(s) does this change affect?**
Module(s): all
Week(s): all

**What is the work that needs to be done?**

On a previous version we had some nice edit on github buttons. We have them on the CYF+ site too.

I want them to be pretty discreet and not get in the way, so probably hidden in some kind of flyout on the block and not made super obvious.

Probably something like

`{{ with .File.Path }}Fix me{{ end }}`

It would have to go on the block I guess because the page doesn't have the file paths of all the blocks.

**Why is this work important to do?**

We are quite good at encouraging trainees and vols to open tickets but having a little boopy button right there on the block would probably help.

**Additional context**

We want to encourage more and more trainees to collaborate and co-create their learning journey.

**Who might need to know about this change?**