Revert Dockerfile

Collectstatic needs to be done on startup, since it requires a .env file with secrets

Fix Dockerfile

• Add back collectstatic step to Dockerfile

Logging to Seq

• Adds a Seq log handler
• Restructure logging statements
• Remove Debug flag altogether from settings.py, because it was not being set to False correctly by environment variables

Better stellar.toml Handling

• The stellar.toml file has been removed from source so that it can be volume mounted through Docker at runtime

First Release Candidate

• Implements a basic SEP-24 deposit and withdrawal flow, with a bit of Gridcoin styling
• This does not implement any kind of AML/KYC