Add missing js include

This PR adds `CGXP/tools/tools.js` to the routing build.

If `myproject/templates/routing.js` receives a `serverError` through mako, then js goes through the `if (serverError.length > 0)` condition and raises an Ext window by using `cgxp.tools.openWindow()`, but currently this function is not included in the `routing.js` build.