Add alias 'cl'

Shows `git config --list` without duplicates and with later entries
overriding earlier ones, aligned on the key.
Use default git pager instead of cat

Because it's annoying when I accidantally `git log` on a project with
long history and it barfs out every single commit since its birth.
Adapt to Redbet environment
Add shorthand for creating a deploy request
Tidy and improve deploy request shorthand
Add test_sparkle script

Runs all tests on all brands, outputs result to text files.