Merge pull request #44 from seavor/polina

Add price functionality in items page
Merge pull request #45 from seavor/polina

More pricing stuff / calculations + some cleanup
fix emptyTrayPrompt()
setup button logic frame for restraunt closed
Merge pull request #46 from seavor/jay

Jay
fix getSubtotal function (toFixed() needed to be before append like i said :p )
Merge pull request #47 from seavor/jay

fix getSubtotal function (toFixed() needed to be before append like i sa...
Merge branch 'master' of github.com:seavor/fatapp into polina

Conflicts:
	backend/Slim/index.php