Revert "[#845] Assets are no longer being copied during install."

These files ARE required.

This reverts commit 1f0531d.

lib/generators/spree/install/templates/app/assets/javascripts/admin/all.js

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+// This is a manifest file that'll be compiled into including all the files listed below.
+// Add new JavaScript/Coffee code in separate files in this directory and they'll automatically
+// be included in the compiled file accessible from http:https://example.com/assets/application.js
+// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
+// the compiled file.
+//
+<% if lib_name == 'spree' %>
+//= require admin/spree_core
+//= require admin/spree_auth
+//= require admin/spree_api
+//= require admin/spree_dash
+//= require admin/spree_promo
+<% else %>
+//= require admin/<%= lib_name.gsub("/", "_") %>
+<% end %>
+//= require_tree .

lib/generators/spree/install/templates/app/assets/javascripts/store/all.js

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+// This is a manifest file that'll be compiled into including all the files listed below.
+// Add new JavaScript/Coffee code in separate files in this directory and they'll automatically
+// be included in the compiled file accessible from http:https://example.com/assets/application.js
+// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
+// the compiled file.
+//
+<% if lib_name == 'spree' %>
+//= require store/spree_core
+//= require store/spree_auth
+//= require store/spree_api
+//= require store/spree_dash
+//= require store/spree_promo
+<% else %>
+//= require store/<%= lib_name.gsub("/", "_") %>
+<% end %>
+//= require_tree .

lib/generators/spree/install/templates/app/assets/stylesheets/admin/all.css

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+/*
+ * This is a manifest file that'll automatically include all the stylesheets available in this directory
+ * and any sub-directories. You're free to add application-wide styles to this file and they'll appear at
+ * the top of the compiled file, but it's generally better to create a new file per style scope.
+ *
+<% if lib_name == 'spree' %>
+ *= require admin/spree_core
+ *= require admin/spree_auth
+ *= require admin/spree_api
+ *= require admin/spree_promo
+ *= require admin/spree_dash
+<% else %>
+ *= require admin/<%= lib_name.gsub("/", "_") %>
+<% end %>
+ *= require_self
+ *= require_tree .
+*/

lib/generators/spree/install/templates/app/assets/stylesheets/store/all.css

@@ -0,0 +1,17 @@
+/*
+ * This is a manifest file that'll automatically include all the stylesheets available in this directory
+ * and any sub-directories. You're free to add application-wide styles to this file and they'll appear at
+ * the top of the compiled file, but it's generally better to create a new file per style scope.
+ *
+<% if lib_name == 'spree' %>
+ *= require store/spree_core
+ *= require store/spree_auth
+ *= require store/spree_api
+ *= require store/spree_promo
+ *= require store/spree_dash
+<% else %>
+ *= require store/<%= lib_name.gsub("/", "_") %>
+<% end %>
+ *= require_self
+ *= require_tree .
+*/