Make hildon support more freedesktop specs

[IMbackK]

for modern desktop linux applications to integrate well we need to support:

1. StatusNotifierItem
2. Desktop Notifications

[MerlijnWajer]

I think notifications via libnotify should work, but it looks like you're looking for others - right?

[IMbackK]

StatusNotifierItem are things like gui deamons (email programs, chat programs etc) libnotify dosent work for me on d4 or vm so thats a bug then. (test with notify-send)

[freemangordon]

https://github.com/maemo-leste/hildon-home/blob/master/src/hd-notification-manager.xml

no idea why libnotify does not work for you though

[sicelo]

1. [StatusNotifierItem ](https://freedesktop.org/wiki/Specifications/StatusNotifierItem/)

These are (currently) not supported for sure

2. [Desktop Notifications](http://www.galago-project.org/specs/notification/0.9/index.html)

These are supported, and can be tested, for example, with the instructions at https://wiki.maemo.org/Phone_control#Notifications.

However the dbus signals are not supported, only the methods are. Not sure how Maemo handles them, because obviously they are somehow processed, otherwise nothing would happen when you click the notification. But yes, providing standard interfaces for these sounds like a good idea

[IMbackK]

Desktop Notification support has been improved to support at least v1.0 so this works mostly now

StatusNotifierItem needs https://github.com/maemo-leste/hildon-status-menu/pull/3 to be merged

[MerlijnWajer]

Is this PR for hildon-status-menu ready?