Bug 779411 - jqplot fixes for piechart and syntax error.

With the piechart in combination with other charts you have to set the
highlighter and cursor show tooltip to false which stops seen errors.

The syntax errors are caused by only removing the duplicated js files
and not the whole path so changed that to remove whole line.

src/report/report-system/html-piechart.scm

@@ -238,6 +238,10 @@
                     legend: {
                          show: true,
                          placement: \"outsideGrid\", },
+                    highlighter: {
+                         show: false },
+                    cursor: {
+                         showTooltip: false },
                    };\n")
 
             (if title

src/report/report-system/report.scm

@@ -755,8 +755,8 @@
        (if report
 	   (begin 
 	     (set! html (gnc:report-render-html report #t))
-             (set! html (gnc:substring-replace-from-to html "jquery.min.js" "" 2 -1))
-             (set! html (gnc:substring-replace-from-to html "jquery.jqplot.js" "" 2 -1))
+             (set! html (gnc:substring-replace-from-to html (gnc:html-js-include "jqplot/jquery.min.js") "" 2 -1))
+             (set! html (gnc:substring-replace-from-to html (gnc:html-js-include "jqplot/jquery.jqplot.js") "" 2 -1))
            ))))
     (gnc-unset-busy-cursor '())
     html))