BibEdit: regression tests fix

* Addresses issue with guest detection using request object.
  (closes #1584)

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
WebBasket: adjustments for 'next'

* Adds content to Your Account/Baskets widget
  (dropdown list of baskets, link to /yourbaskets)

* Implements 'add to basket' in search view

* Replaces broken layouts in html with bootstrap classes
  The old html is not replaced where it looks OK.
  If we want to fix it completely, a Jinja template should be added
  instead of editing the old style html generator.

* Removes unused imports.

Signed-off-by: Krzysztof Lis <krzysztof.lis@cern.ch>
Reviewed-by: Jiri Kuncar <jiri.kuncar@cern.ch>

Conflicts:
	modules/webbasket/lib/webbasket_templates.py
	modules/webbasket/lib/webbasket_user_settings.py