Completed form functionality and signin/sign up page functionality

@DuaneGarber 

* added a `Utils` service to hold miscellaneous utilities. at the moment, it only contains `redirect` which takes the path to redirect to, and `formHelper` (documented below)
* fixed the account creation API handler

## FormHelper

**Note:** client side validation is handled in previously existing directives and html. This helper handles submission and response handing (I wanted to bind these directly to `$scpoe.form` but there doesn't seem to be an easy way to do that)

```javascript
var form = Utils.formHelper($scope.form); // all functions will be applied to the form and its matching Html
```

```javascript
apiAction : function (inputs, resourceReq, onSuccess) {} // validate form -> perform resourceReq using inputs -> automatically apply response errors to form OR call success callabck 

validate : function () {} // look for validation errors. return true if there are none

visibleInputs : function ()  {} // get an array of the  $ inputs which are not hidden (allows for dynamic form validation using show/hide)

resErrHandler : function (apiError) {} // Use as a callback to the error parameter on $resource. apply's errors to the form. validation errors will display at the matching field. otherwise, the error is set in formObj.globalError for display in html
```