Add index.js for components

src/components/index.js

+export {default as Button} from './Button';
\ No newline at end of file

src/views/events/eventDetails.js

@@ -4,7 +4,7 @@ import * as events from '../../models/events';
 import { log } from '../../models/log';
 import { isLoggedIn } from '../../models/auth';
 import inputGroup from '../form/inputGroup';
-import Button from '../../components/Button';
+import { Button } from '../../components';
 import JSONSchemaForm from '../form/jsonSchemaForm';
 
 class EventSignupForm extends JSONSchemaForm {

src/views/login.js

 import m from 'mithril';
 import { login } from '../models/auth';
-import Button from '../components/Button';
+import { Button } from '../components';
 
 module.exports = {
   username: '',

src/views/profile.js

@@ -2,7 +2,7 @@ import m from 'mithril';
 import { isLoggedIn } from '../models/auth';
 import * as user from '../models/user';
 import * as groups from '../models/groups';
-import Button from '../components/Button';
+import { Button } from '../components';
 
 
 // shows all relevant user information

src/views/studydocs/studydocList.js

@@ -3,7 +3,7 @@ import * as studydocs from '../../models/studydocs';
 import { apiUrl } from '../../models/config';
 import { isLoggedIn } from '../../models/auth';
 import { Error401 } from '../errors';
-import Button from '../../components/Button';
+import { Button } from '../../components';
 
 const tableHeadings = [
   'title', 'lecture', 'professor', 'semester', 'author', 'download',

src/views/studydocs/studydocNew.js

@@ -4,7 +4,7 @@ import { isLoggedIn } from '../../models/auth';
 import { Error401 } from '../errors';
 import inputGroup from '../form/inputGroup';
 import selectGroup from '../form/selectGroup';
-import Button from '../../components/Button';
+import { Button } from '../../components';
 
 export default class studydocNew {
   oninit() {