[0.7.2] Search result list: Add checkbox and favorite

[Sanookmakmak]

When opening one document of the search result list, the list is disappering and everyone needs to search again.

At least, let the user open the document in a new tab instead in the same window as the search result list.

Or add an option to mark documents of the search result as favorite.

[teadur]

+1 currently it's really hard to open multiple document from same search.

[ArtificialOwl]

You can open document in the current windows, or in a new tab with 0.8.0

[ArtificialOwl]

duplicate #335