Allow full modular UI customization at runtime

Change the template structure and the static file server to allow filesystem-based overrides at runtime.

added 2 commits

• aa6e2c68 - Simplify URL and SRI handling with template functions
• 89814397 - Use the json function to encode logout service metadata

Compare with previous version

added 1 commit

• e0273d5e - Factor out common strings in tests

Compare with previous version

closed