removed border thickness for top bottom left right

Change-Id: Id51776c0b26abd8752894a5b8d2574d5325ca12b
Checked if the parent is IVisualElementContianer and used remove
elements
so while disposing registered object, display objects get disposed
properly

Change-Id: I27880922ca8fbf94283128ca70fcc8c8e2308841
Support for Spark  methods - addElement , addElementAt, removeElement
added
and numElements properties
along with Display object addchild, addChildAt, removeChild,
removeChildAt
Change-Id: I4a24644db764b68a9fb1ca077b6195b187f55cec
Moved addition of historySlider,MenuBar to initApp,
So that layout calculation happens only once in Vis app

Added flag to check to worksapce is updated with new size
and update interanlCanvas in update dispaly list, so that the 
calculated width of visdesktop is available to update internal canvas

control panel busy indicator tragets remains null
as parent is no more in Ilinkbale object in Flex4 , its contentGroup of 
draggable skin, support for content group is added

getter method added to get host component of skin







Change-Id: I9dd4f2c10a5ec0deee340edbd5fa4c49907d51ca
Updated codes of console is added from github site for testing
once merged this can be removed

Change-Id: If577238aead46fbfcdb46758051e96c04b932de0