Minor HTML fixes and removal of unused stylesheet

Help/3 Analysis Modules/1 Basic Statistics.html

@@ -21,8 +21,8 @@ <h2>Summary</h2>
 <li>File type: Says whether the file appeared to contain actual base calls or
 colorspace data which had to be converted to base calls</li>
 <li>Encoding: Says which ASCII encoding of quality values was found in this
-file.
-</li><li>Total Sequences: A count of the total number of sequences processed.
+file.</li>
+<li>Total Sequences: A count of the total number of sequences processed.
 There are two values reported, actual and estimated.  At the moment these
 will always be the same.  In the future it may be possible to analyse just
 a subset of sequences and estimate the total number, to speed up the analysis,

Help/3 Analysis Modules/12 Per Tile Sequence Quality.html

@@ -28,7 +28,7 @@ <h2>Summary</h2>
 can see that certain tiles show consistently poor quality.  A good
 plot should be blue all over.
 </p>
-<p><img src="per_tile_quality.png" alt="Kmer profiles"></p>
+<p><img src="per_tile_quality.png" alt="Per tile quality"></p>
 <p>
 Reasons for seeing warnings or errors on this plot could be transient
 problems such as bubbles going through the flowcell, or they could

Help/3 Analysis Modules/4 Per Base Sequence Content.html

@@ -59,15 +59,15 @@ <h2>Common reasons for warnings</h2>
 <ol>
 <li>Overrepresented sequences: If there is any evidence of overrepresented
 sequences such as adapter dimers or rRNA in a sample then these sequences 
-may bias the overall composition and their sequence will emerge from this plot.
+may bias the overall composition and their sequence will emerge from this plot.</li>
 <li>Biased fragmentation: Any library which is generated based on the ligation
 of random hexamers or through tagmentation should theoretically have good
 diversity through the sequence, but experience has shown that these libraries 
 always have a selection bias in around the first 12bp of each run.  This is
 due to a biased selection of random primers, but doesn't represent any individually
 biased sequences.  Nearly all RNA-Seq libraries will fail this module because of
 this bias, but this is not a problem which can be fixed by processing, and it 
-doesn't seem to adversely affect the ablity to measure expression.
+doesn't seem to adversely affect the ablity to measure expression.</li>
 <li>Biased composition libraries: Some libraries are inherently biased in their
 sequence composition.  The most obvious example would be a library which has been 
 treated with sodium bisulphite which will then have converted most of the cytosines
@@ -80,6 +80,7 @@ <h2>Common reasons for warnings</h2>
 only sequences which do not match.  Sudden deviations in composition at the end
 of libraries which have undergone aggressive trimming are therefore likely to be
 spurious.</li>
+</ol>
 
 </body>
 </html>

Help/3 Analysis Modules/6 Per Base N Content.html

@@ -13,7 +13,7 @@ <h1>Per Base N Content</h1>
 <h2>Summary</h2>
 <p>
 If a sequencer is unable to make a base call with sufficient confidence
-then it will normally substitute an N rather than a conventional base]
+then it will normally substitute an N rather than a conventional base
 call
 </p>
 <p>