Ubuntu Indicator support

[GoogleCodeExporter]

What steps will reproduce the problem?
1. While using one of the last Ubuntu versions
2. call yad --notification

What is the expected output?
Getting an icon in the systray.

What do you see instead?
Nothing.

What version of the product are you using? On what operating system?
yad 0.26.1
Ubuntu 13.10

Please provide any additional information below.
Ubuntu does not show any icons in the systray except wine and java anymore 
because of their new design guidelines. Their new concept is called indicator 
or appindicator. 

This has some advantages e.g. icons in the "systray" are always in the same 
order.

On the other hand all applications using the systray are not longer supported.

Many developers have reacted and have added appindicator support so when the 
application is running in ubuntu it's using appindicator instead of systray.

Possible solutions:
Quick and dirty: Identify yad as wine.
Good: Add appindicator support.

Original issue reported on code.google.com by Peter.Po...@gmail.com on 27 Feb 2014 at 12:36

[GoogleCodeExporter]

sorry, but i can't do this. i don't use ubuntu. appindicator requires a special 
library, which works only in unity. so i can't compile and debug such features. 
but any patches from ubuntu people with support of an appindicator are welcome 

Original comment by ananasik on 27 Feb 2014 at 12:52