Merge pull request #19 from inoda/style

started styling group show page
Added balance controller to user model, fixed relationships for to and from transactions
Merge pull request #20 from inoda/balance-calculator

Added balance controller to user model, fixed relationships for to and f...
passed previous tests
Merge pull request #21 from inoda/holy-shit

passed previous tests
added monetize helper method
Updated confirmed transaction column to include integers
Merge pull request #22 from inoda/confirmed-column

Updated confirmed transaction column to include integers
Wrote transaction retreival methods
Added testing for getting transaction history
refactored feature tests and transaction model test
Merge pull request #23 from inoda/test-refactoring

refactored feature tests and transaction model test
added model tests
cleaned up clutter
Merge pull request #24 from inoda/test-refactoring

Test refactoring
added controller logic for reject button, changed specs
cleaned up css a little
Added (unstyled) transactions table
fixed bill form style and functionality, fixed group display bug
fixed merge conflicts