Added new model Configs.

Changes some field constraints for Stadiums and Clients.
Created migration "configs".
Added class ConfigView and methods for work with it
Added jquery validation for Reservation create page
Moved link to ValidationMessages.js into _SettingsLayout.cshtml
Added searching at reservations list page.
Updated jqury to version 2.1.1. Deleted jqury-globalize.
Implamentation ConfigSetting with some error.
Implamentation of ConfigSetting.