add main-wrapper class to main wrapper el.
move page.tpl to subtheme
Merge branch 'master' of github.com:adamsro/cpagardens_themebase

* 'master' of github.com:adamsro/cpagardens_themebase:
  moved code from duplicate function
  added placeholder functionality for older browsers and IE
  moved javascript for placeholder to cpagardens_themebase