Improvements to site templates suggested by swhite

* Make the navbar fixed to the top of the page
* Put the search box to the top right of the page
* Move per-page controls to the top right of the header
* Use the ConfigHeader content as the navbar brand
* Use a fluid container for main content to use the full
  width of the page

https://bugs.corefiling.com/show_bug.cgi?id=40263
Use ignore attribute when adding content-controls to the page footer.

This prevents logged traces for pages where this tile attribute is not
set.

https://bugs.corefiling.com/show_bug.cgi?id=40263