Add "per block" to payout

Question that is asked from time to time. Most ppl thinks it is total for 24hrs of mining, but it it per block reward after 24hrs.

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@@ -104,7 +104,7 @@ <h1>P2Pool <span class="symbol"></span></h1>
         <p>Node uptime: <span id="uptime_days"></span> days Peers: <span id="peers_out"></span> out, <span id="peers_in"></span> in</p>
         <p>Local rate: <span id="local_rate"></span> (<span id="local_doa"></span> DOA) Expected time to share: <span id="time_to_share"></span></p>
         <p>Shares: <span id="shares_total"></span> total (<span id="shares_orphan"></span> orphaned, <span id="shares_dead"></span> dead) Efficiency: <span id="efficiency"></span></p>
-        <p>Payout if a block were found NOW: <span id="payout_amount"></span> <span class="symbol"></span> to <span id="payout_addr"></span>. Expected after mining for 24 hours:  <span id="expected_payout_amount"></span> <span class="symbol"></span></p>
+        <p>Payout if a block were found NOW: <span id="payout_amount"></span> <span class="symbol"></span> to <span id="payout_addr"></span>. Expected after mining for 24 hours:  <span id="expected_payout_amount"></span> <span class="symbol"></span> per block.</p>
         <p>Current block value: <span id="block_value"></span> <span class="symbol"></span> Expected time to block: <span id="time_to_block"></span></p>
         <div id="warnings"></div>