As a developer, I would like our theme building logic to live in one place

• Type: Story
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: 7.0.X EE, 7.1.X, Master
• Component/s: JS Themes Toolkit, ~ [Archived] Themes Infrastructure
• Labels: None
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Sprint: UI Sprint 41

Our current build tools each implement their own way to build themes. I would like to have all our build tools call the same jar to make it more maintainable for all projects.