refresh ckeditor from 4.2.2 to 4.3
change default database driver from 'mysql2' to 'sqlite3'
fix bug: 'def initialize' not 'initializer'
add Devise layer settings
change default devise config:
- from 3 chars for password minimum
- "post", not "delete" for sign_out operation
split topmenu and footer templates
add default pattern.css