Make FlashMessenger::clear() public.
Allow uppercase letters, '-' and ',' in session ID

ref: http://www.php.net/manual/en/function.session-id.php
"The , (comma) and - (minus) characters are allowed in the file session handler."
Fix session_start  if it is already running
Strips background color fix for none-gradient browsers.  With this change IE shows strips much similar to gradient supported browsers.
Removed CSS-styles for selected text - used browser defaults.