Modernize Releeph project create controller

Summary:
Ref T3092.

  - Check for a duplicate key error;
  - do less single loading and use Query classes;
  - use responsive UI elements;
  - add crumbs.

Test Plan: Created a new project, and hit error cases.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3092

Differential Revision: https://secure.phabricator.com/D6629