#2 Reload target is lost after session timeout

[Michael Crane]

Reload target is automatically stored in session by
Prerender tag and used by Reload tag in non-Ajax mode
to reload a composite page.

After session timeout the reload target is lost, so
when a user activates component, it does not know where
to load composite page from.

Must revert changes made from 0.1 to 0.2, and bring
back target location hidden field (for HTML forms).
Also, must append target location into links that used
to activate component.

[Michael Crane]

Logged In: YES
user_id=1273365

Newly created Link and Submit tag contain address of
composite page in their href.

Check that Submit tag sends address of composite page in
Ajax mode.

[Nobody/Anonymous]

Logged In: NO

If cookies are supported, use cookies to store things like
(1) reload address and (2) ajax call flag.