Merge pull request #1 from TangibleClassGrp/Touch-for-BG-Menu

Implemented tap and hold gestures, background menu, and fixed major UI problems.
bug/layout fixes

Added clear screen to the background menu
Resized clipart and menu items better
hid background menu by default
hide menu once drag an item out of it
Updated App Name to Dream-A-Scene
Image Changes

Join button added, clip art bgs removed, scenes resolutions fixed
undid hide menu

hiding the menu caused menu to no longer be available, so undid change
Clear Screen
Clear Screen (change of color to go well with bg)
New PowerPoint with Personas in it.
change layout
Several Fixes

Includes Yongkang's work for black border layouts
Fix for drop on menu
Fix for double tap to show/hide menu
Fix for choosing menuitem hides menu
Includes code for checking clipart position
Add label to change background
Images (including button and clearscreen)
Add design slides
Revert "undid hide menu"

This reverts commit 130090f7ebc7798cd72bbdccf72d1625eebad358.
fixed screwed up commit - missing ppt updates only
Added Join Button
clipart removal working

doesn't always work right when drag there, but  will remove them - just
need to check the boundaries on the table
ppt
update PPT to add design