New dist.
Changed so that revenue is added to pay buffer on pay slip approval
while deducting costs instead of when the time report is confirmed.
Moved startEdit call to PaySlipDoc.
Fixed refresh bug when calculating incoming- and outgoing buffers for a
pay slip. Added Employee.recalculateBuffers, button in employee view and
automagic update.
Removed Revenue.isApproved.
Changed accounting specification to read revenues from pay slips instead
of time reports.