Initial commit
Renamed root package to fi.jasoft.dragdroplayouts due to repository
location change.
Fixed broken text file reference paths due to root package renaming.
Added readme file to lib directory so Git does include the directory in
the repository
Fixed rendering issue with Tabsheet and Accordion #1
Refactored IFrame shim implementation to its own utility class
Extracted Shimming support into its own interface #2
Replaced string literals with constants
Refactored DragFilter painting into a common filter wrapper #3
JavaDoc and removed unnecessary imports
Moved public resources into addon specific folder
Fixed typos in DefaultHorizontalLayoutDropHandler
Replaced attribute and transferable strings with constants
Added initial stub classes for DDCssLayout
Worked on css layout, added css layout demo.
More work on the DDCssLayout
Commented out empty properties
Added default drop handler for css layouts + polishing
Extracted common dropping logic from all default drop handlers
into its own abstract superclass.
Fixed some minor bugs with drop handling in DDCssLayout