[packagekit] more small ui issues

[Matthias Clasen]

This time about gpk-application:

It feels like teasing to show a list of 'collections', but provide no
obvious way to list their contents. It seems that you can actually get
at the collection contents via the "Depends" menuitem. Maybe that
should be made more obvious.

Virtually all the entries under Languages have a tooltip of " ".
Curiously, Armenian has a nice tooltip...

There's again several help buttons that are not left aligned.


Matthias