equivalent / cherry-pick of SHA-1: 0f00c4e3c2a5fa07047568ab6ecbae9e86fc98c0 * restored local 'View Source' approach for examples + SHA-1: f2d53bf42b67f6c4e04642d8a28f374b84af1d29 * fixed up all examples to use the local 'View Source' feature; unified the HTML.
fixed bug in Checkbox Select Column plugin in case the dataset is NOT a SlickGrid.DataView object (i.e. data is missing the getItemMetaData API)
Dataview.getItemMetadata now accepts both a row index and an optional cell (column) index -- handy for on-the-fly generation of metadata.
whitespace police raid
updated the interface of the various ItemMetadataProvider instances: all get***RowMetaData methods have this interface: `function(rowData, row, cell /* may be FALSE */, dataRows)`
fixed incorrect removal of line in slickgrid - oops!