Merge branch 'hotfix/str_replace_argument_order_stupidity'
cherry picked opencpu_session commit 178fb0e632e2823d04fbe405d3dd19f044f8efe7
dynamic auto-input fields are now posted one by one without redirect. can hence be used by following fields.
reverse premature merge
missing global
Merge branch 'hotfix/site_fdb' into develop

Conflicts:
	Model/OpenCPU.php
	Model/RunUnit.php
	Model/Site.php
	webroot/assets/example_surveys/random_items.xlsx