DB-config for postgresql

change database.yml
Set log level

Log level debug
Work version v0.1.3

 - Add check for recursion redirect
 - Add check alias format
 - Add remove space charecter from real url
 - Modify errors partial for support errors, whith not relate with table columns
 - Fix show condition for menu with additional parameter
 - Change DB-config: development and test on sqlite3, production on postgresql
 - Change require gems for development and production
Work version v0.1.4

 - Add page for 404 error
Work version v0.1.5

 - Add button for detect free alias
 - Some modifications in css