New features: 
* Move components between cards by dragging them to a tab
* Removed drag-to-delete and added a garbage icon on components
* Hiding garbage and move icons on components until they're hovered
Min height for cards in designer to make moving between tabs work better.
Added an animation to the tabs to show you can drag there.
firefox animation for tabs while sorting
Linting fixes.
Added a couple of missing tab-rebuild event listeners.
Merge pull request #1514 from flukeout/cardmove

Some new features...