Notable refactoring:
- Use stdlib "context" in place of "golang.org/x/net/context"
- Go-kit no longer wraps errors, so we remove the unwrap in transport_error.go
- Use MakeHandler when setting up endpoint tests (fixes test bug caught during
this refactoring)
Closes#1411.
* Adds loadAll action to redux entity config
* API Client get invites
* Add invites to the user management page
* Updates user block styles on user management page
* Submit modal form on enter
* Modify details form styles
* Enter submits edit user form
* Removes unused admin dashboard page
* API Client - revoke invites
* Delete invite entities in redux
* Revoke invites from admin manage users page
* Show success flash message after user invite is revoked
