api call to fetch owned items working
changed fetch of user's items to accept user's object id
nested Owner in AvailableItem class working with gson
Minor refactoring of AvailableItem
it's working
added blank TradeProposalActivity and linked to button press on AvailableItem detail view
TradeProposalActivity shows list of items owned by current user
AvailableItem detail frag passes current item to TradeProposalActivity
AvailableItem that was clicked on available in TradeProposal frag
TradeProposal gets written to parse
extracted TradeProposal write to Parse to TradeProposal model
removed attributes, getters, and setters from TradeProposal