Add price of item
Add field  for cache time.
Fix wrong pasted variable name.
Add necessary table structures.
Move fetching logic to its own model.
Remove debug statements.
Rename file name
Separate price into buy and sell.
Fix copyright year.
Add missing columns to get / store data.
Remove tax information as not needed there.
Add check for up to date items.
Interim commit for caching objects.
Replace hard coded value with variable value.
Remove debug statements.
Set cache time to null if no value or value less then zero.
Merge remote-tracking branch 'origin/feature_caching_api_calls'