Add scripts directory

Includes the theme generation scripts.
Remove old custom color theme assets
Committing away some changes for backup
Merge branch 'master' into themes-cleanup
Style: Use card ui for list items everywhere
Rename listItemSelector to itemSelector since we use it on more than just list items
Conform image selection state to use itemSelector
Card background needed for state_focused false
Add new selectable state to gallery images
Add top border to step lines and topic content for pizazz
Add a right border to tablet topic lists
Add updated accustream assets and themes
Ignore scripts assets directory
Use item selector attribute everywhere
Update dialogs to use theme styling
Various style updates for styles to respect themes

Search View, Add accustream details, and other.
Enable barcode scanner