feature/new-status

[bgunnar5]

I decided it would be best to split the refactor/status branch into 4 different branches:

1. A branch for the merlin status command
2. A branch for the merlin detailed-status command
3. A branch for the merlin queue-info command
4. A branch for all of the documentation for these commands

This is the branch for the merlin status changes and will most likely be the largest of the 4.

The refactored merlin status command in this PR contains the following functionality:

• now shows a step-by-step summary of the status of a study
• includes a progress bar and a summary block for each step
• additional options to remove prompts and add colorblind assistance

[lucpeterson]

Overall this looks fairly complete, with new and associated tests passing. The style seems good, with sufficient modularity. I think I’m ok with this (except above which is a nice to have): any detailed investigation would be of performance, scalability, etc and can be probably explored with additional improvements. In terms of a minimum viable product, I think this will suffice!

[bgunnar5]

@lucpeterson I'll throw the docs in my final PR for this. If you want a look at them you can see them at #431

[koning]

I tried this PR, looks good.