start to move stuff around where it belongs

diff --git a/static/js/plugin.js b/engine/static/js/plugin.js
similarity index 100%
rename from static/js/plugin.js
rename to engine/static/js/plugin.js

diff --git a/static/js/with-datatables.js b/engine/static/js/with-datatables.js
similarity index 100%
rename from static/js/with-datatables.js
rename to engine/static/js/with-datatables.js

diff --git a/static/css/simplelist.css b/plugins/static/css/simplelist.css
similarity index 100%
rename from static/css/simplelist.css
rename to plugins/static/css/simplelist.css