Ombi: Integrate with profiles, Retire user defaults

NOTE: If you previously used the Ombi integration, New ombi users
won't be created until you set this up.

Ombi settings can be added to a profile in Settings > User Profiles.
The "Modify settings" options will now apply to ombi if the selected
profile has ombi settings.

storage.go

@@ -85,6 +85,7 @@ type Profile struct {
 	Configuration mediabrowser.Configuration `json:"configuration,omitempty"`
 	Displayprefs  map[string]interface{}     `json:"displayprefs,omitempty"`
 	Default       bool                       `json:"default,omitempty"`
+	Ombi          map[string]interface{}     `json:"ombi,omitempty"`
 }
 
 type Invite struct {