Add type checking to list argument in foreach. Create a test to check
that the error is caught.

Change-Id: Id032cd6fb1e27040b86337c71180eab098beb00b
Added Slider visible component. A Slider is like a ProgressBar that adds
a draggable thumb. You can touch the thumb and drag left or right to set the
current slider position. This triggers PositionChanged, reporting current
position of the slider thumb.
The slider has min, max and initialPosition properties.
The reported thumb position can be used to dynamically change another
component property; such as TextBox font size or Ball radius.

Change-Id: I30d6714c3b6307776c6b211ae8797cd0c81edec8
Fix for Image mock component issue where doing a Pixel size didn't show a resize for the image in Designer.

Change-Id: Ie1d66f1997b60b2e9f82ba500c3c2e42d36386a5
Adds PUT and DELETE calls to Web component, plus minor changes in internal methods

Change-Id: I74cb511921b222cae57b38783c414587824ac6cf
Fixes a problem resizing Images inside other containers such as Buttons, Canvas, and Screen
background. They used to get clipped instead of resizing correctly, only in the
Designer.

Change-Id: I445c542b5fcc158b28b3306bf97e3a53a4f125a0
Updated Companion App.

Update Version Number of Companion to 2.06 (versionCode 206). Make
instruction text smaller so the connect buttons don't scroll off the
screen on some devices. Update version Skew to handle compatibility
between master and release v133.

Change-Id: Ic67cfeb64970ebf72171e04b762c678bc677c491
Updated GWT to version 2.5.1, gwt_dnd to version 3.2.3, guava and guava-gwt to version 14.0.1
Remove old versions of these packages

Change-Id: Ic3109cb9017a31a552bbc0f0904921b2bfe922de