change a couple elements in store main page in app

[Paul-Eraman-CoopCycle]

current design

• change task delivery ID to default order ID, if no order, use delivery ID
  tracking here: We should attach order_number to delivery when querying /api/deliveries endpoint, so we can display the order number on store smartphone app coopcycle#116
• change color dots to icons in delivery page (clock, biker, check, explamation point...) #1937
• Add price of the order
  tracking here: New delivery; show price details [API changes required] #1885

[vladimir-8]

To be tracked in sub-issues