Fix response after claiming a device to a bootstrap alert box instead of a redirect to a white page.

[vpetersson]

Currently, we redirect to a white page after successfully claiming a device. This isn't a very good UI. Instead, we should simply use a bootstrap alert event and let the user stay on page.

Use "alert-success" for successful claims and "alert-warning" for failed claims.

[a-martynovich]

@vpetersson I can't understand the title. Response to what? Notification box with which contents? Which URL?

[vpetersson]

@a-martynovich good point. Sloppy ticket from my end. Will update.

[vpetersson]

@a-martynovich is that more clear?

[a-martynovich]

on it