UPGRADE: http pak (cleanup).
FIX: esp-angular pak

- Support esp-input* for records without schema
- Use locationChangeSuccess event to record the right previous URI
REFACTOR: harden esp-input.js for empty scope
FIX: esp.js for angular

- Check session based login with an auth check
- Add Esp.feedback, Esp.go.
FEATURE: Add httpRemoveParam API
FIX: ESP package.json:redirect.

Support redirect: “secure”.
REFACTOR: Update ejs.bit to support src/*/paks as paks directory.
REFACTOR: Cleanup and harden for null args.
REFACTOR: LICENSE.md
REFACTOR: LICENSE.md
REFACTOR: license
UPGRADE: paks with new license details
FIX: Overwriting esp-*-mvc files when doing upgrade.