Resource Pack Selector

Initial release

• Drag and drop — reorder selected packs by dragging, and drag packs
  between the available and selected lists. The list auto-scrolls when you
  drag near an edge.
• Folders — packs inside subfolders of your resourcepacks folder now
  appear, grouped under collapsible folder rows and nested to any depth.
  Vanilla ignores these entirely.
• Undo and redo — Ctrl+Z and Ctrl+Y (or Ctrl+Shift+Z), plus on-screen
  buttons.
• Expand/collapse all folders with one button.
• Toggle the Mojang loading screen — replaces the red splash with a
  plain progress bar, on startup and whenever a pack is applied.
• Toggle incompatibility warnings — hides the red highlight and skips
  the confirmation prompt for packs built for other versions.