gplazma: Rename dcache-gsi module to gplazma2-gsi

The gsi module used the dcache- prefix even though it is independent
of all dcache components. It is much more closely tied to the gPlazma 2
project (which is independent of dCache). Hence this patch renames the
module.

Target: trunk
Require-notes: no
Require-book: no
Acked-by: Paul Millar <paul.millar@desy.de>
Patch: http://rb.dcache.org/r/5581/
webadmin: Rename module to dcache-webadmin

Webadmin is a dCache component (it relies heavily on dCache classes) and
the module should thus be called dcache-webadmin to follow the convention
used for other modules.

Target: trunk
Require-book: no
Require-notes: no
Acked-by: Paul Millar <paul.millar@desy.de>
Patch: http://rb.dcache.org/r/5583/