fixes issue while submitting the address form in the checkout. This issue occurs starting from Joomla 2.5.16 and Joomla 3.2
Merge branch 'master' into v3.1.0
added hint for cache refresh in watermarks view
added description output for watermarks
fixes issue with Joomla 3.2 and html5fallback. One had to hit the save button on the checkout address form twice to submit the form
Improved handling of transparent water marks.