hardcoded usage of "asset" helper fuction

[pascalschwientek]

Hi there,

awesome work. We ran into a little problem because it is using the asset helper function to generate the URL which won't work for us in a multi tenant app. (asset() will search for assets in the tenant specific storage location for us.)

I just forked it and put our global helper function as a quick fix for ourselves.

But maybe there is a more elegant solution to this problem to make it more versatile overall?