lots of changes :)

Changes overview

deprecation of class side defaultSpec, now all layouts can be defined in instance side (but defaultLayout can still be defined in class side, in case of need)
deprecation of all WithSpec suffixes. Now to open a presenter window you just use #open/#openModal, etc. (this was a lot more work as you may think).
added #asWindow, #asModalWindow to allow user to modify the window presenter (adding extent, ot title, for example) without needingto override initializeWindow: and before the window is opened.
all layouts are dynamic and can be modified on runtime (API depending the layout).
enhancement SpApplication with notion of iconProvider
added some standard dialogs (inform, request, confirm) to SpApplication
added a progress bar standard dialog/processor (SpJobListPresenter)
enhanced Common-Widgets: SpFilteringListPresenter, etc.
many improvements to SpCodePresenter, including syntax highlight, better code operations, text search, etc.
implemented drag&drop (not all widget, but required).
enhanced styleSheets usage
box, grid and scrollable layouts implement SpTAlignable (to better place its contents).
enhanced API for building grid layouts.
fix any remaining memory leak (some may remain, as always... but we removed all we found ;)

... and many, many tweaks and bugfixes!

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