Bug 23166: Call the methods from the .inc

Bug 23166: Call the methods from the .inc

We do not longer need the order variables to be passed from the
controllers, we can call the methods on the biblio object instead.

There is something wrong with our ->search method and TT behaviours, it
is hard to retrieve object list in a scalar context.
If [% objects.method.count %] is called, objects.method will get the
first object of the list and count will explode (Koha::Object->count
does not exist)

We need to force the call in a scalar context to retrieve an iterator
and prevent to fetch all the objects (we could have called all then
size, but it's not efficient)

If adopted I will move the plugin on a separate bug report to ease
backport

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Joonas Kylmälä <joonas.kylmala@helsinki.fi>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>