add original C links to entry navigation bars

The navigation bar for a winning entry now has a "_Original C_" link
(between the ✅ and the Inventory on the right hand side) so that one
may easily view the original C code that was submitted for IOCCC judging.

Ran `make www timestamp` to perform the above.

2020/burton/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/burton/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/burton/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/burton/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fburton%2Findex.html">&#x2713;</a>
 </div>
 

2020/carlini/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/carlini/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/carlini/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/carlini/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fcarlini%2Findex.html">&#x2713;</a>
 </div>
 

2020/endoh1/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/endoh1/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/endoh1/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/endoh1/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fendoh1%2Findex.html">&#x2713;</a>
 </div>
 

2020/endoh2/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/endoh2/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/endoh2/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/endoh2/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fendoh2%2Findex.html">&#x2713;</a>
 </div>
 

2020/endoh3/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/endoh3/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/endoh3/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/endoh3/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fendoh3%2Findex.html">&#x2713;</a>
 </div>
 

2020/ferguson1/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/ferguson1/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/ferguson1/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/ferguson1/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fferguson1%2Findex.html">&#x2713;</a>
 </div>
 

2020/ferguson2/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/ferguson2/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/ferguson2/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/ferguson2/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fferguson2%2Findex.html">&#x2713;</a>
 </div>
 

2020/giles/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/giles/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/giles/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/giles/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fgiles%2Findex.html">&#x2713;</a>
 </div>
 

2020/kurdyukov1/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/kurdyukov1/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/kurdyukov1/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/kurdyukov1/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fkurdyukov1%2Findex.html">&#x2713;</a>
 </div>
 

2020/kurdyukov2/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/kurdyukov2/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/kurdyukov2/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/kurdyukov2/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fkurdyukov2%2Findex.html">&#x2713;</a>
 </div>
 

2020/kurdyukov3/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/kurdyukov3/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/kurdyukov3/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/kurdyukov3/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fkurdyukov3%2Findex.html">&#x2713;</a>
 </div>
 

2020/kurdyukov4/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/kurdyukov4/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/kurdyukov4/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/kurdyukov4/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fkurdyukov4%2Findex.html">&#x2713;</a>
 </div>
 

2020/otterness/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/otterness/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/otterness/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/otterness/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fotterness%2Findex.html">&#x2713;</a>
 </div>
 

2020/tsoj/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/tsoj/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/tsoj/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/tsoj/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Ftsoj%2Findex.html">&#x2713;</a>
 </div>
 

2020/yang/index.html

@@ -447,6 +447,7 @@
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/yang/prog.c">C code</a>
   <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/yang/Makefile">Makefile</a>
   <a class="Right" href="#inventory">Inventory</a>
+  <a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2020/yang/prog.orig.c">Original C</a>
   <a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.ioccc.org%2F2020%2Fyang%2Findex.html">&#x2713;</a>
 </div>