Prevent auto load of lodash.compat, closes #110

Lo-dash is a Restangular dependency. grunt-bower-install references
`lodash.compat.js` (as specified by its `main` property in `bower.json`),
which is non-CSP compliant.

Therefore, blacklist Lo-dash from grunt-bower-install and add the reference
manually (before Restangular to prevent possible loading issues and before
`bower:js` block which gets overwritten by grunt-bower-install).