add aasm gem to manage status
add column settled to expenses and portions
added status for groups
added settled for expenses and portions

default values for groups is open, for expenses and portions is false
modified expense , portion and group model

add scope to expense and portion
Merge pull request #26 from elitenomad/marcus

icon for owner of groups on group index, plus duplicate existing expense
Merge branch 'master' of github.com:elitenomad/expense_tracker

fixed conflicts
Conflicts:
	app/views/expenses/_form.html.erb
Merge pull request #29 from elitenomad/federico

Federico
fix bug in expense and portion model
Merge pull request #30 from elitenomad/federico

fix bug in expense and portion model
Fixed the transfer of dollars to another group
Merge pull request #31 from elitenomad/Pranava_Users

Fixed the transfer of dollars to another group
Fixed the expenses and portions current methods
Posted a calculated amount onto controller
Merge pull request #32 from elitenomad/Pranava_Users

Pranava users
conflicts with schema.rb, portion model and groups model
Fixed the Date Formats
Merge pull request #34 from elitenomad/Pranava_Users

Fixed the Date Formats
Merge branch 'master' into marcus
add status management for expense and portion
Merge branch 'master' of github.com:elitenomad/expense_tracker

solved problems and other suff
Conflicts:
	app/models/group.rb
	app/models/portion.rb
	db/schema.rb
now it actually works (hope)