Cloudsplaining

* UI: Fixed an issue where the Remediation guidance was not showing up in the resulting report. Fixes 70
* Triage Worksheet: Made the values under the Triage worksheet "Type" column more specific - i.e., AWS-Managed Policy, Customer-Managed Policy, Inline Group Policy, Inline User Policy, or Inline Role Policy. Before, it just said "group", "role", "user", or "Policy", which didn't help much.
* Added some backend methods that do not change the functionality. This will help with the eventual UI uplift (and helps with an additional side project)

UI:
* Definitions for Risk types are now available via Popovers. Fixes 66
* Renamed "Group", "User", "Role" as "Inline Group Policy", "Inline User Policy", and "Inline Role Policy" respectively. Addresses 63
* Fixes links to the inline policies in case there are duplicate names. Addresses 63
* Moves "Attached to Principal(s)" to the Finding card instead of in the finding details in case there are duplicate policy names. Fixes 63

* Made callable via script to partially fix 39
* Move to virtualenv instead of Pipenv

* Inline policies are now clearly mapped to their roles.

* Excel/CSV export capability
* Table row selection capability

Just a few UI fixes:
* Sort columns in Summary table by searching.
* Reasonable size restrictions on "services affected" columns, with Scrollable cells