Control statements based on the if and elseif constructs must have a single space before the opening parenthesis of the conditional and a single space after the closing parenthesis.

goBack() will redirect user to his returnUrl
fixes #925

Usage:
init --env=Development
init --env=Production

- Turned on CSRF validation by default.
- Added access control for login, signup and logout for frontend application.
- Added access control for login, logout and index for backend application.
- YII_ENV is now defined for all applications.
- No trace is writted to logs if debug is turned off.
- Added default error view for frontend and backend.
- In frontend application captcha will always ask for "testme" if YII_ENV is defined as "test".

- Turned on CSRF validation by default.
- Application params are now readed before config is defined to be able to use values from params when configuring.
- Added access control for login and logout.