Merge pull request #28 from MultiTeemer/master

Add base admin functionality
Delete composer.lock file
Update symfony checkers
Translate tabs to spaces in composer.json
Fix SonataCore dependencies
Add php codestyle
Add shell script for project updating
Add base linux installer
Remove colon from 'Easy install' section in readme
Increase salt length
Implement UserInterface in User class
Encode password in insertion and update methods
Use key constants for our own field description
Code refactor and style following
Merge remote-tracking branch 'upstream/master'