move vendor js into head for better reusability
make xlwt real optional

you can install it by `pip install django-xadmin[Excel]`
not render in __repr__

causing recursion with template panel in DebugToolbar
add a way to disable queryset.select_related in ListAdminView

it's unacceptable slow when sql inner joins multiple tables
also, only select_related the displaying fields to boost performance
add fields attr support when calling modelform_factory
add fields attr support when calling modelform_factory
Add form.js into list page for action-form.
Improve thumbnails grid styles.
actually #14529 already fixed in django 1.2 at least
Merge pull request #53 from flisky/modelform_fields

add fields attr support when calling modelform_factory
Fix layout plugin bug.
Update layout plugin display style.
Fix Modal display position bug.
Render breadcrumbs in code.
bug
修改列表页多个details-handler 标题不变化
fix context naming conflict of bookmark permissions
Fix top search bar width error.
Merge branch 'master' of github.com:sshwsfc/django-xadmin
Upgrade bootstrap to 3.0-RC2