major: remove need for several templates, simplify code, CF & admin use

major: remove need for several templates, simplify code, CF & admin use

- GLM Associate template now takes care of its sidebar through the
  glma setting of 'sidebar area'. Now these pages can use the
 'no-sidebar' template
- Gallery Template was essentially already using a no-sidebar
  template
- This all is achieved by allowing 'Top Content' CF on any template
  rather than only on Gallery Templates, as is required by the
  request to be able to show a gallery using Top Content on
  GLM Associate template pages (and virtually any page)
- Reduced 'default' code in Interior Page file, as a big part of
  this is now handled in the County Landing template