added dependency for grunt-nodemon and task in gruntfile
nodemon grunt configured
added karma launcher with initial config
Merge branch 'master' into feature/add-karma-runner

Conflicts:
	Gruntfile.js
	package.json
Merge branch 'feature/add-karma-runner'
fix problem wiht empty password
added first casper test for backoffice authentication
casper config in gruntfile, installed grunt-env and grunt-casper
casper config in gruntfile, installed grunt-env and grunt-casper