CORE-4166 Renamed IPlantWindowInterface#adjustPosition.

The GXT Component class already has an adjustPosition method, which is also called when the user manually moves Windows.
Renamed this method to adjustPositionForView so that it is only used by our Desktop Layout classes.
CORE-4334 Fix for new IplantWindowBase#setMaximized method.

Updated the new setMaximized method to only attempt to maximize or restore if the iPlant window was initially constructed with the isMaximizable flag set to true.
CORE-4334 Fix for TileDesktopLayout window resizing.

Added IPlantWindowInterface#isResizable method.
Updated TileDesktopLayout to not resize a window if it is not resizable.
This will prevent un-resizable windows from becoming unusable by programmatically sizing too small.