Add frontend assets and plugin bundles

Add the legacy frontend themes, scripts, and plugin assets required by the main SPOTA interfaces.

assets/plugins/jquery-mockjax/.editorconfig

@@ -0,0 +1,12 @@
+; EditorConfig is awesome: http://EditorConfig.org
+
+; top-most EditorConfig file
+root = true
+
+; Tab indentation (no size specified)
+[*.js]
+indent_style = tab
+indent_size = 4
+end_of_line = lf
+trim_trailing_whitespace = true
+insert_final_newline = true