Change spreadsheet block size to something reasonable
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
To make bugs easily noticeable in the spreadsheet view, I have set the block size of the data fecthed to the client to 10 rows. We need to fix this to something reasonable (say 1024) on the 3.2 branch.
This should be done as late as possible, but for the release to ensure that we notice any bugs.