Merge pull request #43 from antonkorotkov/development

Option to disallow all people to see invoice pages
Dashboard Widgets + plus fix to is_payment_made() function
Fixed default notifications settings ( CRM notifications )
Merge remote-tracking branch 'upstream/development' into development
Displaying incorrect times paid on invoice overview http://wordpress.org/support/topic/displaying-incorrect-times-paid-on-invoice-overview?replies=2