Merge pull request #23 from sergey-shambir/master

Qmake: fixed linux pro files issues in generators.
Replaced Q3FileDialog with QFileDialog for better look&feel on Ubuntu

Also fixed unused variable warning.
Merge pull request #25 from sergey-shambir/qt4_dialogs

Replaced Q3FileDialog with QFileDialog for better look&feel on Ubuntu
this SHOULD fix close problem...
    1. Fixed the crash that could occur if the user closed quick edit
    while editing param type
    2. Attribute and operations added through quick edit now appear at
	their proper places in main tree view
    3. Fixed operation propagation that got broken during previous
    releases