Bugfix/delete original bootstrap things (#52)

* Delete bootstrap related things #51

* cleanup ember-cli-build #51

* move bootstrap imports to main scss file #51

* Move back brocolli tree hacks #51

Author: dan-ste

addon/styles/_es-navbar.scss

@@ -1,7 +1,3 @@
-@import 'ember-bootstrap/dropdown';
-@import 'ember-bootstrap/navbar';
-@import 'ember-bootstrap/transitions';
-
 /**
   Navbar in header
 **/

addon/styles/addon.scss

@@ -5,6 +5,9 @@
 @import 'ember-bootstrap/variables';
 @import 'ember-bootstrap/mixins';
 @import 'ember-bootstrap/grid';
+@import 'ember-bootstrap/dropdown';
+@import 'ember-bootstrap/navbar';
+@import 'ember-bootstrap/transitions';
 
 @import 'variables';
 @import 'normalize';