Update Spreadsheets with better SUM formula

[wtf]

We should update all "amount raised" (and similar) formulas to =SUM(INDIRECT(ADDRESS(9,COLUMN())):INDIRECT(ADDRESS(ROW()-1,COLUMN()))) in all the spreadsheets we use.

This removes the need to update those formulas whenever we add new rows above it.

This update is required in order to properly resolve #73

NOTE: The starting row in the above formula is hard coded to 9 so it can be directly pasted into "amount raised" cells. Please use the correct starting row for other applications of the formula.