Customer orders now limited to available quantity. 'Sold out' appears
next to item in search result if quantity is 0.
Merge branch 'vojos_ct' of https://github.com/smbassett/music-store-db.git into vojos_ct
Fixed README ;D
Fixed table display for manager's daily report.
Added topsellingitems.php to Managers page
Modified manager homepage to link to new topsellingitems page