Compatibility fix in bs2 with less2, refs #7634
Changes in settings page, refs #7722

- Make setting list-menu stick on scroll
- Split setting list in multiples pages
- Ghange settings menu path to 'settings/global' (migration/fixtures)
- Move Finding Aid format setting to Finding Aid settings page
- Change redirections to corresponding pages
- Few style changes
Stop using i18n template helper in setting forms

Refs #7722