added kfit and kfatigue to profile page

rowers/templates/rower_preferences.html

@@ -99,11 +99,14 @@
   </li>
 	<li class="grid_2">
 	<form enctype="multipart/form-data" action="" method="post">
-		<h2>Range over which Critical Power rolling data (fitness) are calculated</h2>
-		<p>Use this form to change the number of weeks over which Rowsandall
-		keeps track of your Critical Power. </p>
-		<p>A shorter range will give you notifications of fitness improvements more often,
-		but will also quickly forget those breakthrough workouts.</p>
+		<h2>Fitness and Performance Manager Settings</h2>
+		<p>Use this form to change the parameters affecting your performance management.</p>
+		<p>A shorter range for the CP calculations
+			will give you notifications of fitness improvements more often,
+		but will also quickly forget those breakthrough workouts. Shorter decay
+	time constants for the performance manager will model a quicker building up
+of fitness and a faster recovery. Recommended values are 42 days (fitness)
+and 7 days (fatigue).</p>
 				<table>
 	{{ cpform.as_table }}
 			</table>