Merge pull request #46 from lowki/master

Added setup script
Change default database prefix : sla_ to sl_
Update setup system
Update setup system
Update check_config
Update check system, ignored verification if .dev file is in doc. root
Added logs view module.
Update sla_news and added sl_listing class
Blocking reading access of unauthorized properties for modules
Update README.md
Update README.md
Merge remote-tracking branch 'upstream/master'

Conflicts:
	.gitignore