fixes #2407 - Add STI to settings model

Also adds some tests for rendering new/missing STI models, and
refactors the old default_settings loader into the new sub-models.

Feature #2368 - form helpers, exceptions and fixes

Feature #2368 - host list popups and various fixes

Feature #2368 - i18n extracting strings

fix minor css classes declaration.

setting page has tabs for categories, yeh!

this also fixes #1742

[UI] - make sure settings intput fields do not resize incorecctly upon inline edit

updates UI to bootstrap v2

changed 'settings' to 'more', and 'oreman settings' to 'settings'

clean up unused views and tests, refs #1184