Bug 8884: opacheader is not in the header on CCSR

In CCSR the opacheader preference isn't really in the header it's to the
right of the search box (see attached). I'm okay with a customizable
region over there, but we should have a new preference for that and
header should be above the search box as it implies.

To test:
1) Put something in the OpacHeader syspref. Preferably something large
   and header-like for maximum effect.
2) Select CCSR theme.
3) View OPAC. Notice placement of "header" content.
4) Apply patch.
5) View OPAC. Notice placement of "header" content.
6) Sign off.

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Passes koha-qa.pl, works as advertised with one caveat; the content of
opacheader is by default underneath the div "top-bar". A couple breaks
in my OpacHeader test made it visible, so I'm going to assume this is a
styling issue and not a bug as such.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 8884: (follow-up) rearrange placement of the top-bar div in CCSR

This patch makes it easier to avoid having the top bar
overlap other OPAC page content (particularly custom
header content set via the opacheader system preference).

This is done by moving the top-nav div outside of the
main doc3 div and adjusting the CSS accordingly.  Yes,
this does end up having top-nav.inc be included from
opac-bottom.inc, but it would require touching rather
more templates to have it be included immediately after
the <body> tag.

This patch also removes a duplicate instance of the
cmspan span.

To test:

[1] Change to the CCSR OPAC theme.
[2] Before applying the patch, open a set of OPAC
    pages (e.g., main page, user page, search results, bib
    details) in your web browser.
[3] Apply the patch, and open the same OPAC pages in separate
    tabs.  Comparing the pre- and post- version of each page
    to verify that the placement
[4] Add an OpAC header using the opacheader system preference.
[5] Verify that the header is displayed without overlapping
    the top bar.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>