adds a git pull on page featch

[BarakStout]

Summary

Adds a sync back from a git repo.

Details

On page loads it performs a git pull in the background.

Checks

• [ ] In case of new feature, add short overview in docs/<corresponding file> N/A
• [ ] Tested changes N/A
• Tested by:
  1. Making a change in the Web UI
  2. Confirm that the change is in Github repo
  3. Edit a file in Github repo
  4. Refresh and see the change in Web UI

Note: Between steps 3 and 4 you may nee to allow for a second or two for changes to propagate depending on network

[BarakStout]

@Linbreux LMK what you think

[Linbreux]

Hi @BarakStout

Thanks for your PR! Looks like a handy feature.
Did you by any chance also test it with our docker environment?