Improve config and storage path handling

[slice]

Default JSON storage files (such as insects.json) exist relative to the current working directory. However, should they exist relative to the source code? How can this be specified? Right now, they clog up the current working directory, introducing the possibility of them being accidentally git added into version control.

This issue can also apply to the config folder. Where should that go? Relative to the source code, or somewhere else?

We might have to introduce another conflict (data dir? config dir?) in order to solve this.

[lun-4]

short term solution: python -m lifesaver.init, add config.yml, add .gitignore

long term solution: data dirs, with the id of the data dir for a specific bot being based off pipenv's id's for virtualenvs (project + hash of path to project)