One missing help file added; two new help files added

lang/en/help/workshop/includeteachersgrade.html

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+<P ALIGN=CENTER><B>Include Teacher's Grade</B></P>
+
+<p>This option allows the teacher's assessments of the submissions to be included
+	as though they were peer assessments. If this option is set to YES then the teacher's 
+	assessments are in effect counted twice, firstly as the normal teacher's 
+	assessment and secondly by including them in the pool of peer assessments. 
+	The teacher might want to do this if (a) the number of peer assessments of 
+	each submission is low or (b) to try to stablise the peer assessments when 
+	they appear to be either biased or unreliable.</p>
+

lang/en/help/workshop/leaguetable.html

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+<P ALIGN=CENTER><B>The League Table of Submissions</B></P>
+
+<p>The League Table lists the best submissions produced in the assignment. The number 
+	of entries can set to Zero, a number between 1 and 20, 50 or &quot;All&quot;. If set to 
+	Zero then the League Table is <b>not</b> displayed. If it is set to a number between 
+	1 and 20 or 50 then that number of submissions are shown, for example, setting 
+	the number to 10 shows the top ten submissions. Setting the number to 
+	&quot;All&quot; gives a table that lists all the submissions.</p>
+
+<p>The second option contols whether the names of the students are included 
+	in the Table or not. This option controls the students' view of the Table, the teacher 
+	always sees the names of the students.</p>
+

lang/en/help/workshop/overallocation.html

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+<P ALIGN=CENTER><B>The Over Allocation Level</B></P>
+
+<p>This level determines whether the allocation of peer assessments to the class 
+is balanced or not. Here the term &quot;balanced&quot; applies to the number 
+of times each student submission is allocated for (peer) assessment. When the 
+Over Allocation Level is set to ZERO, all the submissions are allocated the same 
+number of times, that is, the allocation is balanced. When the Level is set to ONE 
+then some of the submissions may be alocated once more than other allocations 
+(and it follows from this that some of the submissions may be allocated once 
+less than other allocations), that is the allocation is unbalanced. Similiarly if the 
+Level is set to TWO then a greater unbalance is allowed.</p>
+
+<p>Ideally all peer assessments should be balanced. However, the disadvantage 
+is that some students will not have their full quota of submissions to assess 
+until AFTER the last student has submitted their work. When the Over Allocation 
+Level is set to ONE, then most students will find that they have their full 
+&quot;quota&quot; of submissions to assess and they do <b>not</b> have to 
+wait for late submissions. Waiting for late submissions should be even rarer 
+when the level is set to TWO.</p>
+
+<p>So in a Workshop assignment where the number of peer assessments is 
+set to 5, if there are no problems if some of the submissions will be (peer) 
+assessed 4 times, some 5 times and others 6 times, then the assignment 
+will &quot;flow&quot; smoother and the the students will not have to wait so 
+long (if at all) for others to submit work if the Over Allocation Level is 
+changed from its default value of ZERO and set to ONE.</p>