Search a local video file
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Test that local video files in the ~/Videos folder are easily found

Setup:
Have some video files available in ~/Videos folder.

Actions:
1. Open the Dash and switch to the video lens.
2. Make sure some video files from ~/Videos folder are displayed.
3. Search for multiple consecutive substrings of a video file name.

Expected Result:
Results matching the search should be displayed. For example, searching for "ubuntu 1" should returns "ubuntu_video1.avi".
