Suppliers Gate: Create new page for Gate - Suppliers.

[shaniqwa]

This page contains a table displaying all entrances, with the following columns:

• ID of supplier (from barcode)
• Supplier name
• Vehicle plate number (manual input on entrance) (?)
• Number of people in vehicle (manual input on entrance)
• Length of visa to Midburn in hours
• Time of entrance
• Time of departure
• Status: inside / outside / overdue (inside but exceeded visa time)
• Actions: enter / exit

Make sure table is sortable.

[NitayRabi]

https://github.com/Midburn/spark/pull/814