Mofified browser balloons to work with a 2D globe.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk/WorldWind@2148 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Modified markers to work with 2D globe.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk/WorldWind@2149 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Added a marker at 180 longitude to Markers example. Modified markes in that example to spread themselves more over the globe.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk/WorldWind@2150 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Modified several KML Impl classes that override preRender to call their super's preRender method.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk/WorldWind@2151 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Modified rigid shapes to work with 2D globe. Modified AbstractShape to make active during batch rendering the shape data corresponding to the globe state active when the ordered renderable was enqued. Modified RigidShape class to use the shape's center position in calculations rather than computing it from the reference position.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk/WorldWind@2152 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Modified graticule code to work with 2D globes.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk/WorldWind@2153 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Removed empty if-branch in WCSElevationModel.restoreState. Eliminates Idea code warning.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk/WorldWind@2154 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Merge branch 'official' into worldwind-sdk