Bug 25974: Remove inline style from table settings administration page

Bug 25974: Remove inline style from table settings administration page

This patch removes an inline style attribute from the table settings
administration template. A different style is added to the page's
<style> block to try to accomplish a similar effect of expressing the
hierarchy of the page.

To test, apply the patch and go to Administration -> Table settings.

The individual tables of settings should be offset from the headings
above them.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>