Adjustments to the create group form to match mockup specs.

Strip out css for form input from component css file.
Created global form input css.
Padding adjustments.

app/javascript/styles/application.scss

@@ -19,6 +19,7 @@
 
 // COMPONENTS
 @import 'gabsocial/components/buttons';
+@import 'gabsocial/components/inputs';
 @import 'gabsocial/components/tabs-bar';
 @import 'gabsocial/components/dropdown-menu';
 @import 'gabsocial/components/modal';