GitLab

* Moved UI folders and files to new Admin.UI project

* Fixed application version page can no longer refer to Startup type for detecting assembly version

* Fixed build of Admin project that now depends on UI project

* Extracted UI-specific startup helpers and classes into UI project

* Removed bogus project dependency

* Removed now unused namespace imports in map app startup helpers

* Moved styles and scripts and more helpers to UI project

* Moved back root configuration to Admin app because database migration and seeding is probably out of scope of UI

* Moved startup service configuration to UI project through dependency injection helpers

* Moved back one constant unrelated to UI into main project

* Refactored UI project namespaces for consistency

* Fixed some build issues

* Stub for app builder extensions for UI project

* Fixed test project build

* Moved security headers feature to UI project

* Moved sta...