Ominibox: Fix bug#18258
Ominibox: Fix bug#18258

The animation is not stopped after page finishes
to load. The NumberAnimation on progress indicator
causes lots of timeout event and consume ~5% CPU
resource although it is in idle. User QML Timer to
solve this issue.

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser