improve bugs.html and contact.html

Improved some excessively long headings from `bugs.md`.

Removed unused "STATUS: missing make rules" from `bugs.md`.

Add "Jump to: top" near the bottom of `bugs.html`.

Add "Jump to: top" near the bottom of `contact.html`.

Run `make gen_top_html` to perform the above.

contact.md

@@ -67,6 +67,11 @@ You **MUST** include the following two words (separated by a space) in the subje
 **IMPORTANT:** The _YYYY_ in the above Email address **MUST** be changed to the current 4 digit year!
 
 
+<hr style="width:10%;text-align:left;margin-left:0">
+
+Jump to: [top](#)
+
+
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