Disable validation of Session Annotations until all code supports it

This was causing failures in "/webgl-viewer/stack-save".
Merge branch 'session_annotation_validation'

* session_annotation_validation:
  Disable validation of Session Annotations until all code supports it
Better stack interpolation, and correcting errors
Merge branch 'stack-annotation'

* stack-annotation:
  Better stack interpolation, and correcting errors
Add new authorization functionality with Flask-Principle
Merge branch 'authorization'

* authorization:
  Add new authorization functionality with Flask-Principle
Object Ids instead of strings
Merge branch 'Stack-fix'

* Stack-fix:
  Object Ids instead of strings
Fix a transient bug in authorization
Merge branch 'authorization_fix'

* authorization_fix:
  Fix a transient bug in authorization
Merge branch 'master' into dev/dj-websocket-performance

* master:
  Fix a transient bug in authorization
  Object Ids instead of strings
  Add new authorization functionality with Flask-Principle
  Better stack interpolation, and correcting errors
  Disable validation of Session Annotations until all code supports it