[SVCS-826] S3 Compatibility

[NyanHelsing]

Purpose

This PR enables users to connect any s3 compatible storage provider to their OSF account using the s3 addon.

Changes

• Adds host, port, encrypted, and a nickname to ExternalAccount model
• Enables a user to modify settings on their s3 account after it has been connected
  • The configuration for each account is more complex, requiring a user to enter all information if the account is updated or changes is error prone and inconvenient for the user
• Updates waterbutler url creators to add host, port, and encrypted as a query params
  • Waterbutler needs this to connect to the provider

QA Notes

Ensure that users can connect s3-compatible providers

Documentation

Side Effects

Users modifying an account will necessarily modify that account for any other user that also has connected this account. (This is already a behaviour experienced using the 'connect or reauthorize dialog)

Ticket

https://openscience.atlassian.net/browse/SVCS-826