Moving PG from Test into trunk
Added support for many different styles (See demo).
Added few helper methods to PG, updated few method signatures. Styles for roll-over, selected, disabled states are now more accessible than before.
Modified entire workspace. Better demo.
Added placeholder for row header. etc
Bug Fixes 100203, except font size, which is still buggy...
Bug Fixes 100203. Demo updated. Added basic support for css.
Added Cell Selection API.
Added global styles. Updated demo with support for global styles, row manipulation. Added cleanDataProvider method in PG.
Added support for everything described in comments on tickets 1, 3, 5, 6
Added PaintGrid styling functionality to Spreadsheet.