Revert "add TEMPLATE_SITETOOLS_DISPLAY and TEMPLATE_USERTOOLS_DISPLAY basing on Starter template"

This reverts commit 362a4f084345b496ab6b155db3ec50cad3939d0e.

Left the code with only TPL_ACTION_GET
change event name
applying Chris--S suggestions
jointing tpl_header.php
add TEMPLATE_SITETOOLS_DISPLAY and TEMPLATE_USERTOOLS_DISPLAY basing on Starter template
toolbar inside form