Some missing strings (i18n)
Fix file size problem

Issue #2181
Convert actions in PodsAPI::save_pod_item() from do_hook() to do_action()
#2170 #2092
Inline docs for actions in PodsAPI::save_pod_item()

#2170 #2092
Replace htmlentities() with esc_textarea()

Function htmlentities() does not use UTF-8 encoding by default before
PHP 5.4.
See #2159
Merge branch 'pods-htmlentities' of https://github.com/pavelevap/pods into 3.0-unstable
Merge branch '2.x' of https://github.com/pavelevap/pods into 3.0-unstable

Conflicts:
	classes/fields/file.php