Initial changes to support keeping track of portfolio
Major reorg + new concat(), __() and $__() utility functions
Initial support for saving portfolio data in localStorage + improved rendering of trade data
Adding support for deleting portfolios and trades
Creating new QuotesView, QuotesController, GlobalView classes
Adding Model, View and Controller for portfolio
Some comments cleanup
Dynamic update of the return of each trade
Adding portfolio totals
Adding global return analysis
Removing some duplicated code and improving portfolio layout