chore(all): clean up trailing whitespace

jshint is failing.

Closes #2147

Author: chrisirhc

src/datepicker/test/datepicker.spec.js

@@ -1356,7 +1356,7 @@ describe('datepicker directive', function () {
         var wrapElement = $compile('<div><input ng-model="date" datepicker-popup="dd.MM.yyyy"><div>')($rootScope);
         $rootScope.$digest();
         assignElements(wrapElement);
- 
+
         changeInputValueTo(inputEl, '11.08.2013');
         expect($rootScope.date.getFullYear()).toEqual(2013);
         expect($rootScope.date.getMonth()).toEqual(7);

src/modal/test/modal.spec.js

@@ -487,22 +487,22 @@ describe('$modal', function () {
     });
 
     describe('size', function () {
-      
+
       it('should support creating small modal dialogs', function () {
         open({
           template: '<div>Small modal dialog</div>',
           size: 'sm'
         });
-        
+
         expect($document.find('div.modal-dialog')).toHaveClass('modal-sm');
       });
-      
+
       it('should support creating large modal dialogs', function () {
         open({
           template: '<div>Large modal dialog</div>',
           size: 'lg'
         });
-        
+
         expect($document.find('div.modal-dialog')).toHaveClass('modal-lg');
       });
     });