Fixes issue #616; refactores ComplexPanel to just implement IndexedPanel.  So all ComplexPanel subclass now implement it as well.  This is nice because it allows a lot of shared code to be merged into ComplexPanel.java

Suggested by: fredsa
Review by: jgw, knorton


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@1050 8db76d5a-ed1c-0410-87a9-c151d255dfc7
6 files changed