Fixes:
- events: fix error when creating an event with PolicyRequest
- policies: catch error in process to ensure requests finish
- policies: fix obj not being set
- providers/saml: Allow audience to be empty
- providers/saml: Improve Metadata import
- web: add EventInfo case for policy_execution
- web: fix colour for selected sortable table header
- web: fix link on application list
- web: fix loading overlay for site-shell