Fix: Error in purchase return where the check for batch date was wrong.

Fix: Added some common validation for inputs
Feature: created a to_uuid function which will return uuid if the string is correct else None to parse uuid inputs.
Fix: Proper modal template so that the modal is proper width

brewman/static/scripts/account.js

@@ -59,7 +59,6 @@ var AccountCtrl = ['$scope', '$location', '$modal', 'account', 'account_types',
 AccountCtrl.resolve = {
     account: ['$route', 'Account', function ($route, Account) {
         var id = $route.current.params.id;
-
         return Account.get({id: id}).$promise;
     }],
     account_types: ['AccountType', function (AccountType) {