Added install script
1) Install script
- rake tasks under scapp:* scope
- set up db and load basic data (currencies, vats, basic metrices, ...) and creates admin account
-- view /db/install/install_{locale}_/seed.rb
- takes lang as configuration parameter (currently only Czech -> cs)
- usage to install: scapp:install[cs]
1) FIX Training missing slug column in migration