Fixed Bug: Progress label was not shown after another search.

If another search was performed with the same instance of the dialog,
then the progress label was not visible. It is visible now.

Change-Id: Ic9526248d4f79585f59f24197aac832a0bcaaeb9
Fixed Bug: Multiple searches result in correct theme to be applied.

The vector that stores the persona settings is cleared every time a
new search is performed. This results in the correct theme being
selected for downloading and applying.

Change-Id: I8c0413a117c5a7ed660cd785c292c2fad4abd486