Merge pull request #231 from holta/omg2

Update & tighten up omg.yml (cloud-init rapid install script)

Merge branch 'janeczku:master' into master

Merge pull request #199 from deldesir/deldesir-patch-49

Add --live flag to support downloading of "live" videos

Merge pull request #196 from deldesir/deldesir-patch-48

Generate cover [a.k.a. thumbnail/poster] for video manually uploaded

Merge pull request #185 from holta/url-below-desc

uploader.py: Put "Original Internet URL" under description

Merge pull request #172 from deldesir/deldesir-patch-35

Make error status messages user-friendly

Merge pull request #155 from deldesir/deldesir-patch-27

Remove residual [duplicate] YouTube Shorts urls from database