Add live debugging targets to local dev Makefile

[krivard]

Prerequisites:

• Unless it is a documentation hotfix it should be merged against the dev branch
• Branch is up-to-date with the branch to be merged with, i.e. dev
• Build is successful
• Code is cleaned up and formatted

Summary

Adds two targets useful for debugging:

• mysql - a live mysql prompt to the dev database
• bash - a live bash prompt in the python environment

[melange396]

this is great!

i ~never use the docker run command with "bash" but often with "python3" in its place instead... but "bash" is good because lets you poke around the file system of the container, and you can easily enter the same interactive python interpreter by just running python3 from within that bash shell session.