Jump out of pre
Loosen dependencies requirements

Let people try it with the latest Rails,
no guarantees though.
Reload I18n backen after init

Somehow some translations are added to the load path
after I18n has already been loaded.
Mock some AR::Relation methods about tables
Add a meta search mock

Currently raises if a search is passed, is there 
just for debugging purposes.
Cleanup and fix some duplicate methods