Added 'balance sheet report' feature
changed existing features to conform to changes made for 'balance sheet report' feature
added rake task to seed the database with sample data
added reports controller with balance sheet and income statement actions. added partial balance sheet implementation
increased right padding on number columns in balance sheet report
changed balance sheet report to calculate totals as of the specified date instead of using the current account balance
removed redundant pass through accounts to calculate balances in balance sheet report
added 'income statement report' feature
added income statement filter, consolodated logic for filters
removed filter created by accident
finished income statement report
moved common logic from balance sheet and income statement reports into a base class