[OE-3157] - Fixed sticky button bar width
[OE-3094] disallow editing completed operations.
[OE-3094] don't show the schedule/cancel buttons when an operation is completed.
PSR2 compliance changes
Merge branch 'release/1.4' of github.com:openeyes/OphTrOperationbooking into release/1.4
PSR2 compliance changes