improve display_via_github and display_as values

Fixed some inconsistent use of display_via_github and display_as values.

2018/burton2/index.html

@@ -489,11 +489,11 @@ are not recognised when written as <code>-rs</code> in prose).</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/iocccbug04.c">iocccbug04.c</a> - test cases demonstrating problems with iocccsize</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/iocccbug05.c">iocccbug05.c</a> - test cases demonstrating problems with iocccsize</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/iocccbug06.c">iocccbug06.c</a> - test cases demonstrating problems with iocccsize</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/ioccc.kw.freq">ioccc.kw.freq</a> - iocccsize keywords: sorted by 201x frequency</li>
+<li><a href="ioccc.kw.freq">ioccc.kw.freq</a> - iocccsize keywords: sorted by 201x frequency</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/ioc_without_quote">ioc_without_quote</a> - test suite data</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/manpage.sh">manpage.sh</a> - turns ASCII versions of man into real man pages</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/mkkeywords.sh">mkkeywords.sh</a> - reads a file from variations produces string for prog.c</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/results.k">results.k</a> - results with -k</li>
+<li><a href="results.k">results.k</a> - results with -k</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/tac.c">tac.c</a> - tokenize and count C-like languages</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/test01.c">test01.c</a> - test case source code</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/test02.c">test02.c</a> - test case source code</li>
@@ -511,23 +511,23 @@ are not recognised when written as <code>-rs</code> in prose).</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/test14.c">test14.c</a> - test case source code</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/tokenfix.sh">tokenfix.sh</a> - short post-filter</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/unob.sh">unob.sh</a> - refined version of de-obfuscator</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/ansi">ansi</a> - reserved words for a given C standard</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/author-README.txt">author-README.txt</a> - author supplied README</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/c++11">c++11</a> - reserved words for a given C standard</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/c11">c11</a> - reserved words for a given C standard</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/c++14">c++14</a> - reserved words for a given C standard</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/c++98">c++98</a> - reserved words for a given C standard</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/c99">c99</a> - reserved words for a given C standard</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/java8">java8</a> - reserved words for a Java v8</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/kandr2">kandr2</a> - reserved words for a given C standard</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/kandr">kandr</a> - reserved words for a given C standard</li>
+<li><a href="ansi">ansi</a> - reserved words for a given C standard</li>
+<li><a href="author-README.txt">author-README.txt</a> - author supplied README</li>
+<li><a href="c++11">c++11</a> - reserved words for a given C standard</li>
+<li><a href="c11">c11</a> - reserved words for a given C standard</li>
+<li><a href="c++14">c++14</a> - reserved words for a given C standard</li>
+<li><a href="c++98">c++98</a> - reserved words for a given C standard</li>
+<li><a href="c99">c99</a> - reserved words for a given C standard</li>
+<li><a href="java8">java8</a> - reserved words for a Java v8</li>
+<li><a href="kandr2">kandr2</a> - reserved words for a given C standard</li>
+<li><a href="kandr">kandr</a> - reserved words for a given C standard</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/patch">patch</a> - patch to fix iocccsize source</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/results">results</a> - results without -k</li>
+<li><a href="results">results</a> - results without -k</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/runtest.sh">runtest.sh</a> - test suite</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/spotcheck.sh">spotcheck.sh</a> - script to test a lot of files vs iocccsize</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/v7unix">v7unix</a> - reserved words for a given C standard</li>
+<li><a href="v7unix">v7unix</a> - reserved words for a given C standard</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/spotdiff.sh">spotdiff.sh</a> - summarize the results of spotcheck</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2018/burton2/src.doc.txt">src.doc.txt</a> - SPOILER WARNING hints about the source</li>
+<li><a href="src.doc.txt">src.doc.txt</a> - SPOILER WARNING hints about the source</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
 <ul>